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Images: Helix. Shown size and configuration may vary.

Helix

Moonlight

Name: Helix Moonlight
Brand: Helix

Best for: Soft, for back sleepers

A soft 11.5″ hybrid for back and stomach sleepers, also made in Short Queen (60 × 74) and RV King (72 × 80).

Good to know: The cooling pillow top and ErgoAlign hip layer are paid add-ons.

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

Firmness, according to reviewersMedium soft

Pick it if

You sleep on your side
You’re on the lighter side
You sleep hot

Skip it if

You’re a heavier person

From independent reviewers’ findings, credited below.

Your size

72 × 80 in · 11.5″ tall

Where to get it

helixsleep.comQueen $1,183 (sale price) · checked Oct 17 See price

Returns: 365 nights (product 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

Soft, for back sleepers

Good

A soft 11.5″ hybrid for back and stomach sleepers, also made in Short Queen (60 × 74) and RV King (72 × 80).
Trial: 365 nights (product page)
Half of the owners rated pressure relief 4-5 out of 5.
Height: 11.5″

Think about

The cooling pillow top and ErgoAlign hip layer are paid add-ons.
Six of 10 owners rated back support 1-2 out of 5, including a 6-year owner.

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

Small sample · 10 owner reports

The few GoodBed owners of the Helix Moonlight rate pressure relief fairly well but back support poorly.

What people liked

Half of the owners rated pressure relief 4-5 out of 5. Source ↗

What to weigh up

Six of 10 owners rated back support 1-2 out of 5, including a 6-year owner. Source ↗

What independent reviewers found

NapLab (Oct 2026): Soft feel with very good edge support when sitting and lying, excellent cooling, but more motion transfer than average. Best for lighter side sleepers; less suited to most back, stomach, and heavier sleepers. Strong smell for several days. 2025 version (2021-2024 version discontinued); standard cover; likely queen; affiliate links disclosed on page. Read it ↗
Mattress Clarity (Oct 2026): Medium-soft but bouncy, with good shoulder and hip relief for side sleepers, strong edges, and a breathable build suited to hot sleepers. Back support was only okay and it is not supportive enough for stomach sleepers; motion handling was weaker for couples. Model year not stated; size not stated; page conflicts on motion isolation and trial/warranty terms; affiliate links disclosed on page. Read it ↗
Sleepopolis (Oct 2026): Medium-soft feel that worked for back and side sleeping, with good motion isolation and cooling; edges softened under heavier testers. Likely too soft for stomach sleeping and for heavier side sleepers. Page shows conflicting update dates (2024 and 2026); version not stated; size not stated; affiliate links disclosed on page. Read it ↗
Sleep Foundation (Apr 2026): Rated medium soft (4/10). Best for back and stomach sleepers under 130 lb; contours enough for most side sleepers up to 230 lb. Among the lowest core models for edge support. 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 naming the Helix Moonlight (Mar 2019-Nov 2025) Sample: 10 owner reports.

GoodBed's page for this name mixes owners of the pre-2024 Helix version (many report owning it 3-7 years) with owners of the current 11.5″ Core collection bed, so it is treated as related. Most of these ratings date from 2019-2022. GoodBed reviews here are ratings only (no written text), so items paraphrase the star ratings. RedditRecs had no Moonlight owner comments.

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

Moonlight · Review

Helix Moonlight Review - Best Affordable Soft Mattress?

NapLab · YouTube ↗

Moonlight · Review

Helix Moonlight Review - The SOFT Helix Mattress Tested!

NapLab · YouTube ↗

How it compares

Beside the most similar mattresses from other brands.

	MoonlightHelix	Elite HybridBear	Original HybridBear	Pro HybridBear
Type	Hybrid	Hybrid	Hybrid	Hybrid
Queen price	$1,183	$1,599	$829	$1,299
Height	11.5″	14″	11″	13″
Trial	365 nights	365 nights	365 nights	365 nights
Odd sizes	2	None	None	None
Expert reviews	4	3	1	4

What’s inside

1Breathe Knit Cover (optional GlacioTex Cooling Cover + Pillow Top)
2SupremeSupport 2.5 memory foam
3Gel memory foam
4Helix Premium Responsive Foam (soft, for back and stomach sleepers)
5Helix Premium Responsive Foam back & stomach support layer
6Optional ErgoAlign extra-firm hip segment
7Up to 1,000 individually wrapped coils with reinforced side edges
8DuraDense base foam

Feel: Soft
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

365 nights (product 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?

11.5″ Core-collection hybrid for back and stomach sleepers who like a soft feel. SupremeSupport 2.5 memory foam and gel memory foam over two Helix Premium Responsive Foam layers and up to 1,000 wrapped coils with reinforced edges, on a DuraDense base. Optional GlacioTex Cooling Pillow Top and ErgoAlign hip layer cost extra.

How firm is it?

Soft 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 a related model. GoodBed's page for this name mixes owners of the pre-2024 Helix version (many report owning it 3-7 years) with owners of the current 11.5″ Core collection bed, so it is treated as related. Most of these ratings date from 2019-2022. GoodBed reviews here are ratings only (no written text), so items paraphrase the star ratings. RedditRecs had no Moonlight owner comments.

Where did this information come from?