Helix Twilight Luxe Firm Mattress with GlacioTex™ Cooling Cover – Side Sleeper Pressure Relief
Helix Twilight Luxe Firm Mattress with GlacioTex™ Cooling Cover – Side Sleeper Pressure Relief
Helix
Couldn't load pickup availability
HSA | FSA Accepted. Save 30%. Learn more.
Product Details
The Helix Twilight Luxe with GlacioTex™ Cooling Cover is designed for side sleepers seeking a firm, supportive mattress that actively dissipates heat. Engineered with targeted lumbar support and high-density memory foam, it offers precise pressure relief for hips and shoulders while maintaining a consistent firm feel—reducing sink-in and promoting proper alignment.
Key Technical Features
- Firmness Level: 7.5/10 on the industry scale; minimizes sink, supports side sleepers.
- Materials: Zoned lumbar support coils, memory foam layers, choice of GlacioTex™ Cooling or TENCEL™ breathable cover.
- Cooling Performance: GlacioTex™ cover pulls heat away from your body rapidly for overnight comfort. Outperforms standard covers in lab thermal conductivity tests.
- Height: 14" (2" taller than standard Helix models) for increased comfort and deeper mattress profile.
- Certifications: CertiPUR-US® certified foams — tested for indoor emissions, durability, and safety standards.
Comparison: GlacioTex™ vs. TENCEL™ Cover
| Feature | GlacioTex™ Cooling Cover | TENCEL™ Cover |
|---|---|---|
| Cooling Technology | Active heat-dissipating fabric (lab-verified) | Ultra-breathable cellulose fiber |
| Feel | Cool-to-the-touch | Soft and airy |
| Allergen Resistance | Moisture-wicking, hypoallergenic | Hypoallergenic |
Suitability for Side Sleepers
- Reduces pressure on hips and shoulders thanks to precision-zoned memory foam and coil support.
- Firm feel (minimized give) preferred by customers seeking less body sinkage and greater alignment.
- Pillow top adds cushioning without compromising support.
Frequently Asked Questions
What is the best firm mattress for side sleepers who want cooling features?
The Helix Twilight Luxe combines a firm support profile with GlacioTex™ Cooling Cover, offering targeted pressure relief for side sleepers and continuous cooling verified by material tests.
How does the GlacioTex™ Cooling Cover compare to a regular TENCEL™ cover?
GlacioTex™ uses advanced heat-dissipating fibers for immediate, measurable cooling, while TENCEL™ is naturally breathable but less active in thermal transfer, based on independent lab results.
Which mattress type helps prevent hip and shoulder pain for side sleepers?
Mattresses with zoned memory foam and coil support—like Helix Twilight Luxe—support proper alignment and significantly reduce pressure in clinical studies.
Is a pillow top mattress with lumbar support good for people who toss and turn?
The extra cushion and zoned lumbar design stabilize the spine and adapt to movement throughout the night, reducing waking and improving sleep continuity.
Are firmer mattresses better for people who don't like sinking in while sleeping?
Yes. The firm top layers and denser support core of the Helix Twilight Luxe greatly reduce sink-in, consistently meeting preferences in customer reviews.
Showroom Experience
Try the Helix Twilight Luxe at our NYC and NJ showrooms—designed for customers who want to test comfort and feel in person before buying online.
Helix — Personalized Comfort, Engineered for How You Sleep
Helix builds mattresses around your body and sleep style — firmness, support, and cooling matched to you. Compare the full Helix lineup side by side at The Sleep Loft’s NYC, Brooklyn & New Jersey showrooms, then take it home with free white glove delivery.
Best for side, back & combination sleepers, couples, and hot sleepers
- Personalized firmness for your sleep profile
- GlacioTex cooling covers run cool all night
- 100-night in-home sleep trial
- 10–15 year warranty
- Free white glove delivery when you buy in store
Walk-ins always welcome at all 10 NYC & NJ showrooms.
Built around you, tested by experts
Every Helix model is designed for a specific sleep style. Our sleep experts help you find your match in person.
Tailored models
From soft to firm, hybrid to all-foam — a Helix for every body and sleep position.
Cool-to-the-touch
Premium cooling covers wick heat away so you stay comfortable through the night.
Risk-free trial
Sleep on it at home for 100 nights. Love it, or return it.
Built to last
Helix mattresses are made in America and backed by a 10–15 year warranty.
Try Helix before you buy
Compare Helix models in person with a sleep expert at a showroom near you.
Rated by leading publications and review sites
Best Overall Mattress, 2021
Wired
Home Awards Favorite, 2022
GQ
Best Overall Mattress, 2022
Apartment Therapy
Best for Side Sleepers, 2022
Forbes
Featured for Plus Size, 2022
Wirecutter
What sleepers say about trying Helix at The Sleep Loft mattress store
Real Google reviews from customers who tried Helix and other top online mattress brands at The Sleep Loft.
Helix mattresses at The Sleep Loft
Quick answers about visiting, delivery, shipping, returns, and ordering online.
Can I try a Helix mattress in person?
Yes — compare the full Helix lineup at any of our NYC, Brooklyn, and New Jersey showrooms. Walk-ins are welcome, or book an appointment for a guided fitting.
Which Helix mattress is right for me?
It depends on your sleep position, body type, and firmness preference. Our sleep experts help you find your match in minutes in the showroom.
Does Helix include a sleep trial?
Yes, Helix includes a 100-night in-home trial so you can be sure it’s the right fit.
Do you deliver Helix mattresses?
We offer fast local delivery with free white glove delivery, setup, and old-mattress removal when you buy in store.
Is Helix good for hot sleepers?
Helix offers GlacioTex cooling covers designed to feel cool to the touch and help regulate temperature all night.