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The Helix Twilight and Helix Midnight are both designed specifically for side sleepers but offer a different firmness rating.

But which one is more suited to your sleeping style?

Helix Twilight mattress on a white background

(Image credit: 3Z for Tom’s Guide)

Extras wise, the Helix mattresses come with a 100-nightsleep trialand free shipping to your door.

Its a premium mattress, even with discounts.

All Helix mattresses come with a 100-night trial, limited lifetime warranty and free shipping to your door.

Helix Midnight Mattress

As with the Twilight youll get a 100-night trial, limited lifetime warranty and free shipping.

Theres also the option to upgrade to a GlacioTex cooling cover if youre a hot sleeper.

At the bottom, a layer of DuraDense foam provides stability.

Helix Twilight mattress: was from $932now from $680.36 at Helix

Somewhat unusually, the Helix Twilight is mattress thats been specifically designed as a firm mattress for side sleepers.

Lightweight side sleepers may also find it too firm.

The Helix Midnight is a medium firm mattress, which is what we tend to recommend for side sleepers.

Helix Midnight mattress: was from $932 now from $680.36 at Helix

Youll get more of a sink-in feeling with the Midnight, with plenty of contouring.

Motion isolation on both mattresses is excellent, as is edge support lengthways.

Helix Twilight vs Helix Midnight Mattress: Which Should You Buy?

Diagram showing the inside of a Helix Midnight mattress

Though heavier back sleepers may need firmer support.

Helix Midnight mattress on a wooden bedframe, with our Sleep Editor asleep on her side

(Image credit: 3Z for Tom’s Guide)

The Helix Twilight Mattress on a bed frame in a bedroom

(Image credit: Future)

A person rests her hand on the surface of the Helix Twilight Mattress to test the temperature regulation

Helix Twilight mattress - Twin

HELIX MIDNIGHT - Twin

HELIX MIDNIGHT - Full

HELIX MIDNIGHT - Queen

HELIX MIDNIGHT - King

The image shows the Helix Twilight on the left and the DreamCloud Hybrid Mattress on the right in a side by side comparison

A woman sleeping on the Helix Midnight mattress directly next to an image of her sleeping on the Helix Midnight Luxe mattress

The image shows a woman sitting at the foot of the Helix Twilight mattress, which is placed on a wooden bed frame in a neutrally decorated bedroom

The image shows a man wearing jeans and a grey t-shirt lying on his side on the Helix Twilight mattress

The image shows the DreamCloud Luxury Hybrid on the left and the Helix Midnight Luxe in a side by side comparison

Helix Midnight Luxe vs Helix Midnight Elite Mattress comparison image

A split image featuring the Nectar Classic Memory Foam Mattress on the left and the DreamCloud Luxury Hybrid on the right, leading into the DreamCloud Luxury Hybrid vs Nectar Classic showdown

The image shows a woman sitting up in bed and clutching her shoulder in pain

The Avocado Green Mattress on a simple wooden bed frame in a bedroom, a Tom�s Guide price drop deals graphic (right)

The Tempur-Pedic Tempur-Adapt mattress on a bed frame in a bedroom, a man and his young sun sitting on top of it, smiling. A Tom�s Guide price drop deals graphic (right)

A couple using the Scandinavian Sleep Method

Bed bugs

The LG C5 (on left) faces off against the Samsung S95F (on right).

HDMI input

google pixel 9a and google pixel 8a in white and black side by side

The image shows the Casper Hybrid with Snow Technology pillow on the left and the Coop Cool+ pillow on the right in a side by side comparison

(L-R) Denzel Washington as Bobby Trench and Mark Wahlberg as Michael Stigman in “2 Guns”