🇺🇸 United States · Memory Foam vs Hybrid (coils and foam)

Siena Memory FoamvsHelix Midnight

Which one is best for you? Siena Memory Foam vs Helix Midnight - 2026 comparison by Vs Mattress

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Siena Memory Foam$300 OffHelix Midnight20% Off + 2 Free Gifts

Siena Memory Foam

by Siena · Memory Foam

$300 Off

10 years · 180-night trial

Helix Midnight

by Helix Sleep · Hybrid (coils and foam)

20% Off + 2 Free Gifts

10 years · 100-night trial

Pricing by size

Siena Memory Foam

Twin$499

Twin XL$599

Full (Double)$649

Queen$699

King$799

California King$799

Helix Midnight

Twin$936.30

Twin XL$1,061.30

Full (Double)$1,248.80

Queen$1,373.80

King$1,748.80

California King$1,748.80

Essential information

	Siena Memory Foam	Helix Midnight
Type	Memory Foam	Hybrid (coils and foam)
Launched	–	–
Brand	Siena	Helix Sleep
Made in	–	United States
Unique points	The Siena memory foam mattress has five layers of pure comfort: Soft and Comfy Cover Responsive Memory Foam Body Supporting Layer Foundational Foam Shift-Resistant Lower Cover	The Midnight offers balanced support and a medium feel, it has four layers of construction: Cover: Helix Two Touch Design Comfort Layer: Memory Plus Foam (Density: 2.5 PCF) Transition Layer: High-Grade Polyfoam Body Shape Layer: 6" Wrapped Coils Base Layer: DuraDense Foam.
Video	–	Introducing the Helix Midnight

Certifications & trial

	Siena Memory Foam	Helix Midnight
OEKO-TEX®	No	No
CertiPUR-US®	Yes	Yes
Certifications	CertiPur-US®	CertiPur-US®, GREENGUARD Gold
Other certification info	–	<p id="">GREENGUARD Gold</p>
Sleep trial	180 nights	100 nights
Warranty	10 years	10 years
Free shipping	–	–
Free returns	Yes	Yes
Pay later	Yes	Yes
Delivery info	FREE SHIPPING, Within 2 - 5 Business Days With No Contact Delivery	Your Helix Mattress is gently compressed, rolled, and put in a box that's about the size of a bag of golf clubs for easy shipping! Packaging dimensions are 16" x 16" x 48", and we ship via UPS Ground direct from the manufacture to your door.

Firmness & feel

	Siena Memory Foam	Helix Midnight
One firmness fits all	No	Yes
Select your firmness	No	No
Adjustable firmness	No	No
Half and half firmness	No	No
Flippable / reversible	No	No
Firmness info	–	Medium feel top of the bed you need - not too firm, not too soft. Our most common feel choice. Balanced support - best for side sleepers with thin to average body types. A 4-7 on the firmness scale.

Construction & materials

	Siena Memory Foam	Helix Midnight
Layers	Responsive Memory Foam, Body Supporting Layer, Foundational Foam	Helix Two Touch Design, Memory Plus Foam, High-Grade Polyfoam, Wrapped Coils, DuraDense Foam.
Cover	Soft and Comfy Cover: Soft to touch and breathable to keep you cool and comfortable.	Helix Two Touch Design. Each mattress comes with a top cover layer with stretch and a soft touch as well as a lower cover layer for airflow and breathability. Top cover - 100% soft polyester. Lower cover - Jersey knit fabric with woven fire barrier. Upgrade to ultra cool knit cover for cooler nights (available at checkout). This Ultra-Cool Cover is designed using phase change material to keep your body cool when you sleep. Simply zip on the Ultra-Cool Cover in place of your standard cover for quick and easy use.
Machine-washable cover	No	No
Ergonomic handles	No	No
Comfort	Siena means comfort. Comfort that helps you forget about the worries of the day. Comfort that tells your body, “relax, it’s time to recharge”. Comfort that helps you enjoy a long, deep, and soul nourishing sleep.	Uniquely pressure relieving, we use Memory Plus Foam - a special Helix blend.
Support	Some people love super soft mattresses. Some people love a rock hard one. Most people are somewhere in the middle. That’s why the Siena is a medium firm mattress, comfortable to sleep on, but also firm enough to correctly support your body.	Specially designed using a Memory Plus Foam pressure relief layer to cushion your pressure points as a side sleeper. Density of the top and middle layers optimized to give you the right amount of support based on your body type. High-Grade Polyfoam. Providing ergonomic support and cushioning, the transition layer has a medium IFD to match your body type. Wrapped Coils. Hundreds of individual coils help to cradle your body while also limiting motion transfer. Edge Support. Each mattress has an individually wrapped spring unit with a reinforced perimeter. This means your mattress will reduce that roll-off feeling and will keep its shape more while sitting on the edge of the bed. Our technology is proven to be substantially better than all foam options.
Posts	–	–

Size & weight

	Siena Memory Foam	Helix Midnight
Available sizes	Twin, Twin XL, Full (Double), Queen, King, California King	Twin, Twin XL, Full (Double), Queen, King, California King
Dimensions	Twin: 10 "	Twin: 11.5 "
Twin weight (kg)	42	65
Twin XL weight (kg)	45	65
Full (Double) weight (kg)	59	85
Queen weight (kg)	68	100
King weight (kg)	85	120
California King weight (kg)	85	120

FAQs

Siena Memory Foam

What are Siena mattresses made of?

The Siena Memory Foam Mattress is made with a tri-layer design that includes gel-infused memory foam and two different types of polyfoam. The foam used in the mattress is CertiPUR-US certified, meaning it's free from harmful chemicals and additives.

Can you flip the Siena mattress?

The Siena mattress is not designed to be flipped. It has a high-density base foam layer at the bottom, and flipping it would compromise its pressure-relieving properties.

How long will the Siena mattress last?

The Siena mattress, being a budget mattress, is not made with as many high-quality materials and is therefore expected to last about five years. This is approximately half the lifespan of a typical mattress.

Helix Midnight

How soft is Helix Midnight?

The Helix Midnight has a firmness rating between 4 and 7 out of 10. The feel of the mattress may vary depending on the body type of the sleeper – it may feel medium-soft to heavier sleepers and medium-firm to lighter-weight sleepers.

Is the Helix Midnight suitable for heavy people?

The Helix Midnight offers good pressure relief and helps maintain a healthy spinal alignment, making it suitable for heavy people. However, it may not be supportive enough for heavy stomach sleepers.

Is the Helix Midnight suitable for hot sleepers?

Yes, the Helix Midnight is a good choice for hot sleepers as its coil layer promotes airflow throughout the bed, helping to keep the sleeper cool.

Wrap up

Thank you for checking out this Siena Memory Foam vs Helix Midnight mattress comparison. We have tried to compare all the necessary information to help you choose which mattress is the most suitable for you.

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