Helix Sleep has built its reputation on offering personalized comfort through a diverse lineup of hybrid mattresses. Among its core models, the Helix Twilight stands out as the firmest option, designed specifically for stomach sleepers and back sleepers who need robust support and minimal sinkage. In 2025, the Twilight continues to be a top choice for those who prefer a firmer sleep surface without sacrificing responsiveness or durability.
This comprehensive review explores every aspect of the Helix Twilight—from its construction and firmness to its performance in cooling, motion isolation, and edge support. Whether you’re a stomach sleeper seeking spinal alignment or a back sleeper who dislikes plush mattresses, the Twilight may be your ideal match.
Construction and Materials
The Helix Twilight is a hybrid mattress, combining foam layers with a coil support system to deliver firmness, breathability, and durability. Here’s a breakdown of its layers:
Cover
The standard cover is a soft, breathable knit fabric that feels smooth and cool. For hot sleepers, Helix offers an upgrade to the GlacioTex Cooling Cover, which uses phase-change materials to regulate temperature.
Comfort Layer
The top layer features Helix’s Firm Memory Plus Foam, which provides minimal sinkage and a firmer feel. Unlike traditional memory foam, this version is designed to offer pressure relief without deep contouring.
Transition Layer
Beneath the comfort layer is Helix High-Grade Polyfoam, which adds firmness and responsiveness. This layer helps maintain spinal alignment and prevents the body from sinking too deeply.
Support Layer
The core of the mattress features individually wrapped coils that respond to movement and provide zoned support. Reinforced edges improve edge support and durability.
Base Layer
A layer of high-density polyfoam stabilizes the mattress and supports the coil system.
This construction results in a mattress that’s firm, supportive, and breathable—ideal for stomach and back sleepers who need a stable sleep surface.
Firmness and Feel
Helix rates the Twilight as a firm mattress, and most testers place it around a 7–8 out of 10 on the firmness scale. It offers a flat, supportive surface with minimal sinkage.
Stomach Sleepers – The Twilight is tailor-made for stomach sleepers. Its firm surface keeps the hips elevated, preventing the lower back from arching and promoting proper spinal alignment.
Back Sleepers – Back sleepers who prefer a firm feel will appreciate the Twilight’s support. The foam layers cushion the lumbar region without allowing excessive sinkage.
Side Sleepers – The Twilight may feel too firm for most side sleepers, especially those with sensitive shoulders or hips. Side sleepers are better suited to softer models like the Helix Sunset or Midnight.
Combination Sleepers – If you switch between back and stomach sleeping, the Twilight’s responsive design makes movement easy. However, side sleeping may feel uncomfortable due to the firmness.
Cooling and Temperature Regulation
Firm mattresses tend to sleep cooler than plush ones, and the Twilight is no exception.
- Breathable Coil Base: Promotes airflow and prevents heat buildup.
- Optional Cooling Cover: The GlacioTex upgrade actively cools the surface.
In testing, the Twilight performed well in temperature regulation. With the cooling cover, it’s an excellent choice for hot sleepers.
Motion Isolation and Edge Support
Motion Isolation
Despite its coil base, the Twilight offers solid motion isolation. The firm foam layers absorb movement, making it suitable for couples.
Edge Support
Reinforced coils around the perimeter provide strong edge support. You can sit or sleep near the edge without feeling unstable.
Durability and Longevity
The Helix Twilight is built to last. With high-quality materials and a sturdy coil system, it’s expected to maintain its shape and support for 8–10 years. The 15-year warranty adds peace of mind.
Users report minimal sagging and consistent performance over time. The edge support and firmness remain strong even after years of use.
Pricing and Value
As of 2025, the Helix Twilight is priced competitively:
| Size | Price (Standard) | Price (With Cooling Cover) |
| Twin | $936.30 | $1,061.30 |
| Full | $1,249.30 | $1,374.30 |
| Queen | $1,374.30 | $1,499.30 |
| King/Cal King | $1,748.80 | $1,873.80 |
Helix frequently offers discounts, especially during seasonal sales. The mattress also comes with:
- 100-night sleep trial
- Free shipping
- 15-year warranty
These features make the Twilight a strong value for its quality and firmness.
Who Is It Best For?
Ideal For:
- Stomach sleepers needing firm support
- Back sleepers who prefer minimal sinkage
- Hot sleepers (with cooling cover)
- Couples seeking edge support and motion isolation
Not Ideal For:
- Side sleepers
- Lightweight individuals who prefer plush comfort
- Those seeking deep contouring or a “hug-like” feel
Comparison to Other Helix Models
Helix offers a range of mattresses tailored to different sleep styles. Here’s how the Twilight compares:
| Model | Firmness | Best For | Price (Queen) |
| Sunset | Soft | Side sleepers | $1,374.30 |
| Midnight | Medium | Combo sleepers | $1,374.30 |
| Dusk | Medium | Back sleepers | $1,374.30 |
| Twilight | Firm | Stomach sleepers | $1,374.30 |
| Twilight Luxe | Firm | Luxury stomach sleepers | $2,373.80 |
The Twilight Luxe adds zoned lumbar support, a pillow top, and enhanced cooling—ideal for those seeking a more luxurious firm mattress.
Final Verdict
The Helix Twilight mattress is a top-tier hybrid option for sleepers seeking firm support and minimal sinkage. Its design caters specifically to stomach and back sleepers, offering a stable surface that promotes spinal alignment and resists sagging. With solid motion isolation, edge support, and a generous trial period, it’s a well-rounded mattress that delivers consistent performance night after night.
Verdict: A firm, supportive hybrid mattress perfect for stomach and back sleepers.
If you’re looking for a mattress that keeps your spine aligned and sleeps cool, the Helix Twilight is a smart choice.