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Images: Helix. Shown size and configuration may vary.

Helix

Twilight

Name: Helix Twilight
Brand: Helix

Best for: Firm feel

An 11.5″ firm hybrid, also in Short Queen and RV King.

Good to know: The newest page copy available is from May 2026; check the live site.

Type: Hybrid
Height: 11.5″
Sizes: 8 ready-made

Firmness, according to reviewersFirm

Pick it if

You sleep on your stomach

From independent reviewers’ findings, credited below.

Your size

72 × 80 in · 11.5″ tall

Where to get it

helixsleep.comOrder online · delivered to you See price

Returns: 120 nights from delivery (per the archived page) 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

Firm feel

Good

An 11.5″ firm hybrid, also in Short Queen and RV King.
Trial: 120 nights from delivery (per the archived page)
Height: 11.5″
Sizes: Twin, Twin XL, Full, Queen, King, Cal King, Short Queen, RV King

Think about

The newest page copy available is from May 2026; check the live site.
On GoodBed, 6 of 10 owners rated back support 1-2 out of 5.
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

From owners of this model A small set of real reviews, each linked to its source. Not a star rating.

Small sample · 10 owner reports

Older GoodBed ratings for the Twilight name lean low on back support: 6 of 10 owners scored it 1-2 out of 5.

What people liked

No supported praise summary in the sample.

What to weigh up

On GoodBed, 6 of 10 owners rated back support 1-2 out of 5. Source ↗

What independent reviewers found

NapLab (Oct 2026): Firm hybrid with excellent coil support and very strong side edges (head and foot not reinforced), roughly average motion transfer, and good cooling. Suits back and stomach sleepers; not a good fit for most side sleepers. Strong initial smell lasting several days. 2025 version (2021-2024 version discontinued); standard cover, not the cooling upgrade; likely queen; affiliate links disclosed on page. Read it ↗
Mattress Clarity (Oct 2026): Firmer-than-average feel that kept hips aligned for back sleepers, decent edge support, and a memory-foam top that absorbed movement well. Recommended for back and stomach sleepers and couples, not side sleepers; mild odor faded in a few days. Standard Twilight, model year not stated; size not stated; page contradicts itself on hot-sleeper suitability; affiliate links disclosed on page. Read it ↗
Sleep Advisor (Oct 2026): Firm and very supportive on the back but rigid for side sleeping; motion barely registered for normal tossing, and edges sank when sitting. Reviewer felt warm on the standard knit cover and suggests the cooling cover for hot sleepers. Standard Twilight; tested by reviewer plus a heavier colleague; size not stated; affiliate/referral links disclosed on page. Read it ↗
Tom's Guide (Jul 2025): A couple slept on a full for a month. Firm yet cushioned enough for most side sleepers; main tester was uncomfortable on her back. Excellent motion isolation, good cooling, strong side edges but weak head and foot. Core model, standard cover. Tom's Guide discloses affiliate commissions. Read it ↗
Sleep Foundation (Apr 2026): Rated firm (7/10). Best for side sleepers of at least 130 lb. Among the top core models for edge support but lowest for motion isolation; expected to last up to nine years. Part of a review covering all core Helix models. Sleep Foundation discloses affiliate commissions. Read it ↗

Their testing, in our words. We haven’t tested these mattresses ourselves, and we don’t repeat their scores.

Sources & sample limits

10 GoodBed owner ratings (mostly 2020-2023), ratings only Sample: 10 owner reports.

The GoodBed ratings are mostly from 2020-2023 and likely cover the pre-2024 Twilight, not the current Core version. GoodBed reviews here are ratings only (no written text), so items paraphrase the star ratings.

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

Every size it comes in

RV king72 × 80 in11.5″Short queen · 74-inch60 × 74 in11.5″Twin38 × 75 in11.5″Twin XL38 × 80 in11.5″Full · 54-inch54 × 75 in11.5″Queen60 × 80 in11.5″King76 × 80 in11.5″California king72 × 84 in11.5″

Taken from the maker’s size options, in the inches it publishes. Tap a size to compare every mattress made in it.

Video reviews

Twilight · Review

Helix Twilight Review - We Test The Newest Version

NapLab · YouTube ↗

Twilight · Review

Helix Twilight Review - The Firm Helix Mattress Tested

NapLab · YouTube ↗

How it compares

Beside the most similar mattresses from other brands.

	TwilightHelix	Elite HybridBear	Elite Ultra HybridBear	Original HybridBear
Type	Hybrid	Hybrid	Hybrid	Hybrid
Queen price	—	$1,599	$2,129	$829
Height	11.5″	14″	13.5″	11″
Trial	120 nights	365 nights	365 nights	365 nights
Odd sizes	2	None	None	None
Expert reviews	5	3	2	1

What’s inside

1Breathe Knit cover (GlacioTex cooling pillow-top optional)
2SupremeSupport 2.5 memory foam
3Gel memory foam comfort layer
4Helix Premium Responsive Foam firmness layer
5Responsive foam support layer
6Optional ErgoAlign contour segment
7Up to 1,000 individually wrapped coils with reinforced edges
8DuraDense foam base

Feel: Firm
Height: 11.5″
Custom sizes: Not offered for this model

Complete the bed

Odd sizes need everything else in the same inches. Here’s what we have for this mattress’s odd sizes.

RV king · 72 × 80

Short queen · 74-inch · 60 × 74

Returns and ordering

Trial and returns

120 nights from delivery (per the archived page)

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?

Helix Core collection, 11.5″ hybrid: proprietary memory foam and gel memory foam over responsive foams tuned for a firm feel, on up to 1,000 wrapped coils with reinforced edges and a DuraDense base. Options on the page: Breathe Knit cover or a GlacioTex cooling pillow-top upgrade, and an optional ErgoAlign extra-firm foam segment under the hips.

How firm is it?

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

Which sizes and heights can I get?

8 sizes, 11.5″. See every size. Confirm your exact size and height with the seller.

Are the reviews about this exact mattress?

From owners of this model. The GoodBed ratings are mostly from 2020-2023 and likely cover the pre-2024 Twilight, not the current Core version. GoodBed reviews here are ratings only (no written text), so items paraphrase the star ratings.

Where did this information come from?