Updated Oct 26, 2026 · 7 makers’ own size lists checked · findings from 2 independent testing sites · How we pick
84 × 84 inches 213.4 × 213.4 cm
A Wyoming king is 84 inches wide and 84 inches long: a 7-foot square. It’s 8″ wider and 4″ longer than a king.
Commonly used for: Couples who want more room than a king, with a child or pets; rooms that can’t fit an Alaskan king.
We’ve gathered every Wyoming king mattress we could find into one list: 18 from 7 makers, each sold in exactly 84 × 84 inches.
Measure inside the frame and enter the inches.
Each one is sold in exactly 84 × 84 inches, checked against the maker’s own size list.
Big Mattress ClassicBig Mattress Co.Reviewed by 2 expert sitesLongest trialDuo EpicEngineered Sleep100 nights to try itMost owner reviews
10″ Kingship Comfort Round Mattress MediumRest Right Mattress3 owner reviewsReady to ship
12″ Kingship Comfort Superior MattressRest Right MattressMade in this size, not to orderVerified in 84 × 84″The maker calls it “Wyoming King”
Best for: Firmness choice, odd sizes
A 12″ foam bed in soft, medium or firm, made in Wyoming King, Split Wyoming King, Olympic Queen, European King and Queen XL as well as standard sizes.
Good to know: Mattress sales are final once shipped.
Verified in 84 × 84″The maker calls it “Wyoming King”
Best for: Texas, Wyoming and Alaskan kings
A three-piece coil mattress in nine oversized sizes, including 80″ × 98″ Texas king, 84″ × 84″ Wyoming king and 108″ × 108″ Alaskan king, with five comfort tops.
Good to know: It can't be returned: no sleep trial, just one comfort exchange, and no cancelling after production starts.
Made to order in 84 × 84″
Best for: Alaskan, Wyoming and Texas kings Tested by experts
Made to order for big family beds, with parts you can replace one at a time.
Good to know: Its refund wording conflicts with the 100-night trial, so get the terms in writing. “Hybrid” here means air pods, not coils.
Made to order in 84 × 84″
Best for: A plusher oversized bed Tested by experts
The plusher, 13″ version of the Classic for Alaskan, Wyoming and Texas kings.
Good to know: Same refund-wording conflict as the Classic, and no owner reviews we could verify yet.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Made-to-you, and oversized
A 10″ bed whose foam layers are picked for your posture, also offered in Wyoming, Texas, Alberta and Alaskan King.
Good to know: Final sale: there is no sleep trial.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Oversized family beds
A 13.5″ modular hybrid in giant sizes from Wyoming King 84 × 84 to 144 × 84.
Good to know: Ships in several boxes you assemble; the Athlete Bed's inches aren't stated.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Budget foam, many odd sizes
A 10″ memory foam bed in soft, medium or firm with odd sizes from Three Quarter 42″ × 72″ up to Wyoming King 84″ × 84″.
Good to know: Layer thicknesses aren't published, and sales are final once shipped.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Flip for two feels
A 10″ two-sided foam bed (soft/medium or medium/firm) in RV King, RV Short Queen, narrow twin and three-quarter sizes, plus Wyoming King 84″ × 84″.
Good to know: No returns once shipped; check whether 'Custom' needs a phone order.
Made to order in 84 × 84″The maker calls it “84″ Round Mattress”
Best for: Round beds by diameter
A 10″ soft foam round mattress in diameters from 60″ to 99″, with custom sizes available.
Good to know: Sales are final once shipped, so measure the frame's diameter exactly.
Made to order in 84 × 84″The maker calls it “84″ Round Mattress”
Best for: Round beds by diameter
A 10″ medium foam round mattress in diameters from 60″ to 99″, with custom sizes available.
Good to know: Sales are final once shipped, so measure the frame's diameter exactly.
Made to order in 84 × 84″The maker calls it “84″ Round Mattress”
Best for: Round beds by diameter
A 10″ firm foam round mattress in diameters from 60″ to 99″, with custom sizes available.
Good to know: Sales are final once shipped, so measure the frame's diameter exactly.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Firm 84″ square bed
An 11″ firm foam mattress made in the 84″ × 84″ Wyoming King size, with other sizes made on request.
Good to know: No trial or returns once it ships.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Choose a feel, 84″ square
A 12″ foam-and-latex bed with a cashmere cover, offered soft, medium or firm in the 84″ × 84″ Wyoming King size.
Good to know: Pick the firmness carefully: there's no trial or return once it ships.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Two feels with setup
A 15″ two-sided 84″ × 84″ mattress, firm on one side and medium on the other, delivered and set up white-glove.
Good to know: The layer build isn't published, and it can't be returned once shipped.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Wyoming or Alaskan king in foam
A 10″ memory foam mattress sold in 84″ × 84″, 108″ × 108″ and a 48″ × 75″ three-quarter, among 13 sizes.
Good to know: Delarkin's Texas King is 80″ × 95″, not the 80″ × 98″ some others sell; the RV King page gives no clear inches.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Lower-cost oversized foam bed
An 8″, three-layer memory foam mattress made in 84″ × 84″, 108″ × 108″, a 48″ × 75″ three-quarter and 13 sizes in all.
Good to know: Delarkin's Texas King is 80″ × 95″, not 80″ × 98″.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Soft foam in a Wyoming king
A soft 10″ memory foam mattress in 84″ × 84″, a 48″ × 75″ three-quarter and 13 sizes in all.
Good to know: The Alaskan King and RV King pages list wrong-looking inches, so confirm those sizes by phone.
Made to order in 84 × 84″The maker calls it “Wyoming King”
Best for: Thin, low-cost odd sizes
A 6″ two-layer foam mattress in 84″ × 84″, 108″ × 108″, a 48″ × 75″ three-quarter and 13 sizes in all.
Good to know: Prices on the Outback pages are inconsistent and the Alaskan King says call for pricing; its short queen is listed as 60″ × 75″.
A Wyoming king is 84 × 84. Do not confuse it with a California king, which is commonly 72 × 84, or an Alaskan king at 108 × 108. We may earn a commission from qualifying purchases. How we choose and research
| Detail | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Foam | Hybrid | Foam or air-pod hybrid | Foam or air-pod hybrid | Latex | Hybrid | Memory foam | Foam | Foam | Foam | Foam | Foam | Foam | Foam | Memory foam | Memory foam | Memory foam | Memory foam |
| Feel | Soft, Medium, Firm | Duo Latex, Duo Latex Plus, Duo Memory, Duo Memory Plus, Duo Performance | Foam, or adjustable air pods | Plush foam, or adjustable air pods | Built to the sleeper via Essentia ID posture assessment | Adjustable: flippable, removable layers | Soft, Medium, Firm | Flippable: soft side + medium side, or medium side + firm side | Soft | Medium | Firm | Firm | Soft, Medium, Firm | Two-sided: firm side and medium side | Not published | Not published | Soft | Not published |
| Height in Wyoming king | 12″ | 13″ or 14″ or 15″ | 12″ | 13″ | 10″ | 13.5″ | 10″ | 10″ | 10″ | 10″ | 10″ | 11″ | 12″ | 15″ | 10″ | 8″ | 10″ | 6″ |
| How it’s sold | Ready-made | Ready-made | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order | Made to order |
| Returns | No returns | 100-night trial | 100-night trial | 100-night trial | Returnable | Returnable | No returns | No returns | No returns | No returns | No returns | Returnable | Returnable | Returnable | 90-night trial | 90-night trial | 90-night trial | 90-night trial |
| Good fit if | Firmness choice, odd sizes | Texas, Wyoming and Alaskan kings | You have a purpose-built oversized bed: Alaskan, Wyoming or Texas king | You have a purpose-built oversized bed and want a plusher feel | Made-to-you, and oversized | Oversized family beds | Budget foam, many odd sizes | Flip for two feels | Round beds by diameter | Round beds by diameter | Round beds by diameter | Firm 84″ square bed | Choose a feel, 84″ square | Two feels with setup | Wyoming or Alaskan king in foam | Lower-cost oversized foam bed | Soft foam in a Wyoming king | Thin, low-cost odd sizes |
| Independent tests | Not yet | Not yet | 2 reviewers | 1 reviewer | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet |
| Owner feedback | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Merchant-selected comments | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet | Not yet |
| Buy | See price | See price | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote | Get a quote |
A custom maker can build a Wyoming king mattress to your exact inches, including rounded or cut corners. Stores rarely keep this size on the floor.
How it compares with the sizes people mix it up with.
| Size | Inches | Sleeping area | Compared with Wyoming king |
|---|---|---|---|
| Wyoming king | 84 × 84 | 49 sq ft | This size |
| King | 76 × 80 | 42.2 sq ft | 8″ narrower, 4″ shorter |
| California king | 72 × 84 | 42 sq ft | 12″ narrower |
| Alaskan king | 108 × 108 | 81 sq ft | 24″ wider, 24″ longer |
| Queen | 60 × 80 | 33.3 sq ft | 24″ narrower, 4″ shorter |
Look for Wyoming king (84 × 84) sheets.
Custom sizesAB LifestylesClassic Sheet Set with Heirloom Stitching & NoTuck Top SheetUSA-sewn 3/4 and Olympic sheetsCotton sateen sets sewn in South Carolina for a 48″ × 75″ 3/4 bed, a 66″ × 80″ Olympic queen, an 84″ × 84″ Wyoming king and wider family beds, made to your mattress depth.Sheets · 15″ pockets
Egyptian LinensWyoming King (84" X 84" Bed) Sheet Set 608 Soft Cotton Sateen - USADeep-pocket Wyoming king setA USA-made cotton sateen set with an 84″ × 84″ fitted sheet and 18″ pockets, plus a 120″ × 115″ flat sheet.Sheets · 18″ pockets
Mattress InsiderOversized Sheets for Giant Bed MattressesGiant beds, 13.5″ mattressA 600-thread-count cotton sateen set in eight oversized sizes, from 80″ × 98″ Texas King to 144″ × 84″ Family Bed.Sheets
SGI Bedding100% Bamboo Viscose Oversized Sheet SetBamboo sheets for family bedsBamboo viscose sets for seven oversized beds, from an 84″ × 84″ Wyoming King to a 144″ × 84″ Family XL.Sheets
Adult Bunk BedsWyoming King Platform BedHeavy-duty Wyoming king platformAn aluminum platform described as 7 ft × 7 ft (84″ × 84″), 16.5″ tall with 12.5″ underneath, which the maker says tested to 2,000 lb.Platform bed · 16.5″ tall · 2,000 lb stated
Big Mattress Co.Classic Bed FrameHighest stated capacity, oversizedA low 9″ upholstered wood platform in six oversized sizes including the 80″ × 98″ Texas King, Wyoming King and Alaskan King, which the brand says holds up to 2,500 lbs.Platform bed · 9″ tall · 2,500 lb stated
Custom sizesGet Laid BedsPlatform Bed (No Headboard)Solid wood Wyoming or Full XLA plain solid-wood platform with no headboard, sold for the 84″ × 84″ Wyoming King and the 54″ × 80″ Full XL, with thick screwed-in slats and an 11-year warranty.Platform bed
Custom sizesGet Laid BedsLow Tokyo BedLow wood bed, Wyoming kingA low solid-wood bed with a headboard, made to order for the 84″ × 84″ Wyoming King or the 54″ × 80″ Full XL, covered by an 11-year warranty.Platform bedA Wyoming king is 84 × 84. Do not confuse it with a California king, which is commonly 72 × 84, or an Alaskan king at 108 × 108.
84 × 84 inches, 7 feet square.
Yes. It’s 12″ wider and the same length (84″).
Mostly online from specialist brands or a local factory. This page lists every one we’ve found in exact 84 × 84.
Tape an 84-inch square onto the bedroom floor and check access around it. Confirm the support system, mattress construction, bedding dimensions and delivery route before committing. A Wyoming king is 84 × 84. Do not confuse it with a California king, which is commonly 72 × 84, or an Alaskan king at 108 × 108.
12 of the 18 Wyoming king mattresses we list can be returned under the seller’s trial. Made-to-order mattresses often can’t. Each one’s return terms are in its details.
Prices change often, so we link to each seller instead of listing them. Odd sizes are often priced at or above the nearest standard size, and made-to-order ones usually cost more.
Usually not. Owner feedback is about the mattress model, often in a more common size. Each summary says whether it’s about this exact model, and links to the source.
Photo: Rest Right Mattress. May show another size.
Rest Right Mattress
12″ Kingship Comfort Superior Mattress
Good to know: Mattress sales are final once shipped.
All-foam mattress with a flat gray 8-way stretch cover made for adjustable bases: graphene-infused cooling foam, Superior Gel Technology cooling gel foam, a 1.5″ high-density polyurethane transition layer and a 7.5″ high-density support layer. CertiPUR-US foam, made in the USA.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. All mattress sales final; no returns or cancellation once shipped
Engineered Sleep
Duo Epic
Good to know: It can't be returned: no sleep trial, just one comfort exchange, and no cancelling after production starts.
An oversized mattress in three pieces: a one-piece comfort top over a Duo Support base made in two halves, held together by the brand's CLING attachment. Each support half is pocketed coils plus 1.5″ HR foam, with a slightly softer 'AdaptFoam' side and a firmer side, so each half can be flipped to a different feel. Comfort tops: 2″ (Latex, 13″) or 3″ (Latex Plus, 14″) natural latex, 6–8 or 5–7 out of 10 on Engineered Sleep's scale; 2″ memory foam (Memory, 13″, 6–8 out of 10); 2″ memory foam plus 2″ natural latex (Memory Plus, 15″, 3–5 out of 10); or 1.5″ Avena HR foam over 1.5″ Serene HR foam (Performance, 14″, 4–6 out of 10). Organic cotton cover. Ships in 3 boxes.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
No 100-night trial (treated as a custom mattress); one comfort exchange allowed between night 30 and night 45. Orders can't be cancelled once production starts.
Photo: Big Mattress Co.. May show another size.
Big Mattress Co.
Big Mattress Classic
Good to know: Its refund wording conflicts with the 100-night trial, so get the terms in writing. “Hybrid” here means air pods, not coils.
An oversized mattress with replaceable components. Choose foam or the air-pod version; its “Hybrid” uses air pods, not pocket coils.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
100-night trial advertised. The trial page promises free pickup after use, but the refund policy requires unused condition and original packaging and excludes sale items. Obtain written confirmation of applicable terms.
Photo: Big Mattress Co.. May show another size.
Big Mattress Co.
Big Mattress Premier
Good to know: Same refund-wording conflict as the Classic, and no owner reviews we could verify yet.
An oversized mattress with replaceable foam components and a foam or adjustable air-pod configuration.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
100-night trial advertised. Conflicting refund-policy wording requires written clarification of used-mattress and sale-item eligibility before purchase.
Photo: Essentia. May show another size.
Essentia
ProCor P1 Active Custom Mattress
Good to know: Final sale: there is no sleep trial.
Custom performance bed built on the Dormeuse REM9: Essentia's Essentia ID process picks the Beyond Latex organic foam variations for your posture, so layers differ per order. EMF Protection Foam is included. Comes with in-home delivery.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None: final sale (built to the sleeper's specifications)
Photo: Mattress Insider. May show another size.
Mattress Insider
Giant Bed (Alaskan, Texas, Wyoming, Alberta King; Family Bed; Athlete Bed)
Good to know: Ships in several boxes you assemble; the Athlete Bed's inches aren't stated.
13.5″ modular oversized hybrid made in South Carolina, shipped in several boxes: quilted organic cotton cover, cooling gel memory foam, latex, Aireflow transition foam and individually encased coils. Base pieces sit side by side (a Texas King is two 40 × 98 pieces).
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
365-day guarantee
Photo: Rest Right Mattress. May show another size.
Rest Right Mattress
10″ Kingship Comfort Classic Mattress
Good to know: Layer thicknesses aren't published, and sales are final once shipped.
All memory foam mattress made in the USA with CertiPUR-US foam: LuxurySupport foam under a knitted quilted cover, shipped compressed. The page says standard and custom sizes are available; the size list runs from Three Quarter to Wyoming King.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. All mattress sales final; no returns or cancellation once shipped
Photo: Rest Right Mattress. May show another size.
Rest Right Mattress
10″ Kingship Comfort Flippable Elite 2 Mattress
Good to know: No returns once shipped; check whether 'Custom' needs a phone order.
Two-sided 10″ foam mattress: choose a soft/medium or a medium/firm pairing and flip it to change feel. Graphene cooling foam and Comfort Support Foam, CertiPUR-US, made in the USA. Sold in many RV, three-quarter and narrow sizes, plus a 'Custom' size option.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. All mattress sales final; no returns or cancellation once shipped
Photo: Rest Right Mattress. May show another size.
Rest Right Mattress
10″ Kingship Comfort Round Mattress Soft
Good to know: Sales are final once shipped, so measure the frame's diameter exactly.
10″ round foam mattress (soft): gel foam comfort layer over a high-density poly base under a CoolTouch cooling cover. Sold by diameter; the page says custom sizes are available.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. All mattress sales final; no returns or cancellation once shipped
Photo: Rest Right Mattress. May show another size.
Rest Right Mattress
10″ Kingship Comfort Round Mattress Medium
Good to know: Sales are final once shipped, so measure the frame's diameter exactly.
10″ round foam mattress (medium): gel foam comfort layer over a high-density poly base under a CoolTouch cooling cover. Sold by diameter; the page says custom sizes are available.
We may earn a commission if you buy.
Liked A buyer of a 96″ diameter round mattress said they were impressed with its quality. Source ↗
None. All mattress sales final; no returns or cancellation once shipped
Photo: Rest Right Mattress. May show another size.
Rest Right Mattress
10″ Kingship Comfort Round Mattress Firm
Good to know: Sales are final once shipped, so measure the frame's diameter exactly.
10″ round foam mattress (firm): gel foam comfort layer over a high-density poly base under a CoolTouch cooling cover. Sold by diameter; the page says custom sizes are available.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. All mattress sales final; no returns or cancellation once shipped
Photo: Wyoming King Bed Company. May show another size.
Wyoming King Bed Company
The Original
Good to know: No trial or returns once it ships.
Firm all-foam Wyoming King mattress, the company's first model: a 2″ HyperCool comfort layer over the brand's PostureSupport foam base, under a quilted organic cotton cover. Handcrafted in the USA with CertiPUR-US foams.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. Mattresses can't be returned or exchanged once shipped
Photo: Wyoming King Bed Company. May show another size.
Wyoming King Bed Company
The Royale
Good to know: Pick the firmness carefully: there's no trial or return once it ships.
Foam-and-latex Wyoming King mattress: a 2″ HyperCool comfort layer and a 2″ natural latex layer over the PostureSupport foam base, under a quilted cashmere cover with organic cotton. Made in soft, medium or firm.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. Mattresses can't be returned or exchanged once shipped
Photo: Wyoming King Bed Company. May show another size.
Wyoming King Bed Company
The Grand Royale
Good to know: The layer build isn't published, and it can't be returned once shipped.
Two-sided Wyoming King mattress with a firm side and a medium side, finished with a cashmere cover. Includes white-glove delivery and setup with packaging removal, and a 3-year care plan in which the company visits once a year to flip, rotate and clean the mattress.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
None. Mattresses can't be returned or exchanged once shipped
Delarkin
The Oasis
Good to know: Delarkin's Texas King is 80″ × 95″, not the 80″ × 98″ some others sell; the RV King page gives no clear inches.
Delarkin's top all-foam model, 10″ thick: two layers of gel-infused memory foam over five layers of polyurethane foam, including a convoluted (egg-crate) layer for airflow. Hand-built in Delarkin's South Carolina factory and shipped roll-packed in a box, with a removable, washable 100% cotton zip cover. Any size or shape can be made to order.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
90 nights; switch models or return for a full refund
Delarkin
The Summit
Good to know: Delarkin's Texas King is 80″ × 95″, not 80″ × 98″.
Delarkin's most popular model, 8″ thick: a three-layer design with soft memory foam on top over support foam base layers, described as not too firm and not too soft. Hand-built in Delarkin's South Carolina factory and shipped roll-packed in a box, with a removable, washable 100% cotton zip cover. Any size or shape can be made to order.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
90 nights; switch models or return for a full refund
Delarkin
The Cloud
Good to know: The Alaskan King and RV King pages list wrong-looking inches, so confirm those sizes by phone.
A soft 10″ model built like The Oasis but with extra layers of soft foam cushioning; memory foam top over polyurethane support foam. Hand-built in Delarkin's South Carolina factory and shipped roll-packed in a box, with a removable, washable 100% cotton zip cover. Any size or shape can be made to order.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
90 nights; switch models or return for a full refund
Delarkin
The Outback
Good to know: Prices on the Outback pages are inconsistent and the Alaskan King says call for pricing; its short queen is listed as 60″ × 75″.
Delarkin's value model, 6″ thick: two supportive foam layers with a memory foam top, in a cotton-blend cover. Pitched for guest rooms, campers and antique or odd-size beds. A 30-day trade-in lets you upgrade by paying the price difference plus shipping. Hand-built in Delarkin's South Carolina factory and shipped roll-packed in a box, with a removable, washable 100% cotton zip cover. Any size or shape can be made to order.
We may earn a commission if you buy.
We haven’t found owner reviews we can verify yet.
90 nights; switch models or return for a full refund
