Generic illustration · not a product photograph

Sierra

Name: Minnesota Mattress Factory Sierra
Brand: Minnesota Mattress Factory

Best for: Basic bed for small sizes

Medium-firm 8″ coil mattress in Twin, Twin XL and Full, with a 12-year warranty.

Good to know: No Queen or King card; the cover isn't quilted.

Type: Innerspring
Height: 8″
Sizes: Made to order + custom

Your size

54 × 75 in · 8″ tall

Where to get it

minnesotamattressfactory.comOrder online · delivered to you Get a quote

Returns: Not published Details

We may earn a commission if you buy. Check the price for your exact size and height on the seller’s site.

The short version

Worth a look if

Basic bed for small sizes

Good

Medium-firm 8″ coil mattress in Twin, Twin XL and Full, with a 12-year warranty.
Trial: Not published
Height: 8″
Sizes: Twin, Twin XL, Full

Think about

No Queen or King card; the cover isn't quilted.
No owner reviews we could verify yet

Based on the maker’s published specs and terms, and the owner reviews linked below. We haven’t slept on it. Something wrong? Tell us.

What owners say

No owner reviews we can verify yet A small set of real reviews, each linked to its source. Not a star rating.

No owner feedback naming this model was found.

What people liked

No supported praise summary in the sample.

What to weigh up

No substantive concern verified in this small sample. This is a gap in the evidence, not proof of no drawbacks.

Sources & sample limits

None for this model Sample: 0 owner reports.

No Reddit or forum threads about Minnesota Mattress Factory turned up. The only owner account found (a Bungalow Club newsletter letter, Winter 2024) covers a custom 3/4 antique-bed mattress without naming the model; it is recorded at brand level.

Research checked October 14, 2026. These are sourced observations, not our own product tests or a star rating.

Every size it comes in

Full · 54-inch54 × 75 in8″Twin39 × 75 inAs listed Twin XL39 × 80 inAs listed

Taken from the maker’s size options, in the inches it publishes. Tap a size to compare every mattress made in it. Sizes marked “as listed” don’t exactly match a standard size, so check your frame.

Price for every size

From the maker’s site on Oct 24, 2026. Prices change often, so check before you buy.

Size	Inches	Price
Twin	39 × 75	$170	See it
Twin XL	39 × 80	$190	See it
Full	54 × 75	$240	See it

How it compares

Beside the most similar mattresses from other brands.

	SierraMinnesota Mattress Factory	Wool MattressAvocado	Doctor's Choice Original Medium MattressDenver Mattress	Doctor's Choice Plush MattressDenver Mattress
Type	Innerspring	Innerspring	Innerspring	Innerspring
Queen price	—	$2,499	$800	$700
Height	8″	11.75″	12.5″	12.5″
Trial	See terms	See terms	365 nights	365 nights
Odd sizes	None	None	1	1
Expert reviews	None yet	1	None yet	1

What’s inside

1Non-quilted fire-retardant cover
21/2″ foam
3Cotton batting
4Insulator pad
5312 13-gauge coils

Feel: Medium firm
Height: 8″
Custom sizes: Yes, the maker builds to your measurements

Returns and ordering

Trial and returns

Not published

Before you order

Measure inside the frame, not the old mattress
Check clearance above for the height you pick
Make sure your base supports it
Buy sheets in the same exact size

Questions

What is it made of?

Entry innerspring: 312 13-gauge coils under an insulator pad, cotton batting and 1/2″ foam in a non-quilted fire-retardant cover. Sold with a wood box spring foundation.

How firm is it?

Medium firm That’s the maker’s description; we haven’t measured it.

Which sizes and heights can I get?

3 sizes, 8″. See every size. Confirm your exact size and height with the seller.

Are the reviews about this exact mattress?

No owner reviews we can verify yet. No Reddit or forum threads about Minnesota Mattress Factory turned up. The only owner account found (a Bungalow Club newsletter letter, Winter 2024) covers a custom 3/4 antique-bed mattress without naming the model; it is recorded at brand level.

Where did this information come from?

Checked 2026-10-18. Specs and terms can change.