Helix Sleep Core Collection Twilight Firm 11.5" Mattress
Helix Core Twilight firm hybrid mattress. Personalized support for back and stomach sleepers with individually wrapped coils and responsive foam. 11.5-inch profile. Made in the USA.
or $31/mo with 0% APR financing for 24 months
Personalized sleep, engineered in the USA.
Helix Sleep is a 4th-generation family-owned manufacturer based in Southern California. They are one of the few mattress companies in America that makes their own coils, processes their own foams, and sews their own covers — all under one roof.
Personalized by Sleep Profile
Each Helix mattress is designed for a specific sleep profile. The Dawn is built for back and stomach sleepers who prefer a firm, supportive surface. Not a guess — based on sleep science research and millions of customer data points.
Made in America
Every Helix mattress is designed in New York and manufactured in Phoenix, Arizona. CertiPUR-US certified foams. All materials tested for safety and quality.
Sleep Quiz Matched
Helix’s Sleep Quiz has matched millions of sleepers to their ideal mattress. The Dawn is recommended for sleepers who prefer firm support, sleep primarily on their back or stomach, and want a cooler sleep surface.
Lifetime Warranty + 120-Night Trial
Helix offers one of the longest warranties in the industry. Sleep on it for 120 nights. If you do not love it after 30 days, exchange it for a different Helix model at no additional cost.
Firm support, personalized.
Hybrid mattress technology is a fundamentally different material from memory foam. It combines individually wrapped coils with responsive comfort foam for support, motion isolation, and airflow. The Dawn is Helix's flagship firm hybrid mattress.
Individually Wrapped Coils
Harvested from rubber trees and processed using the hybrid method for consistent open-cell structure. Naturally hypoallergenic, antimicrobial, and resistant to dust mites. Lasts 15-20 years without developing the body impressions that shorten memory foam lifespan.
Dense Support Foam
High-density firm foam keeps you on top of the mattress with minimal sinkage. The firm comfort layer prevents your hips from dropping below neutral alignment — critical for back and stomach sleepers.
Breathable Cover
A moisture-wicking knit cover provides a cool, breathable surface. Soft and breathable from the first night.
Coils + foam, engineered for firm support.
Every Helix mattress is manufactured in Phoenix, Arizona. The Dawn combines individually wrapped coils with dense support foam for a firm, responsive hybrid feel.
Breathable Knit Cover
Moisture-wicking knit cover for a cool, breathable sleep surface.
Dense Support Foam
Firm comfort foam keeps you on top of the mattress. Minimal sinkage for back and stomach sleepers.
Individually Wrapped Coil System
Firm gauge coils with targeted support zones. Motion isolation for couples. Airflow through the coil core.
Reinforced Edge Support
Foam encasement for edge-to-edge stability.
Part of the original Helix lineup.
All three Dawn tiers share the same firm comfort profile (8/10 firmness). The difference is height, cover quality, and comfort layer thickness. Standard is the accessible entry, Luxe adds a quilted pillow-top, Elite is the premium 15-inch with enhanced cooling.
Dawn Core Twilight 11.5" — 8/10
Best for: Budget firm hybrid, back/stomach sleepers
Accessible firm hybrid at $1,099 Queen. Dense foam + wrapped coils. The entry point to the Dawn line.
Currently Viewing
Dawn Core Twilight 13.5" — 8/10
Best for: Upgraded firm comfort with quilted pillow-top
Quilted pillow-top adds surface comfort to the firm foundation. 13.5-inch profile. $1,799 Queen.
View Core Twilight 13.5"
Dawn Core Twilight 15" — 8/10
Best for: Premium firm hybrid with enhanced cooling cover
The tallest Dawn at 15 inches with a cooling pillow-top cover. Premium materials throughout. $2,299 Queen.
View Core Twilight 15"Firm hybrid for back and stomach sleepers.
The Core Twilight is designed specifically for back and stomach sleepers who prefer a firm, supportive surface. Helix\u2019s Sleep Quiz recommends the Dawn for sleepers who want minimal sinkage and strong hip/spine alignment.
Back Sleepers
The firm surface keeps the spine in neutral alignment without allowing the hips to sink. The individually wrapped coils provide responsive support that adapts to your body weight without deep conforming.
Stomach Sleepers
Firm support prevents the midsection from sinking, which causes lower back strain in stomach sleepers. The Dawn’s 8/10 firmness provides the flat, resistant surface stomach sleepers need.
Couples
Individually wrapped coils provide excellent motion isolation. Your partner’s movements stay on their side of the bed. Edge support keeps the full surface usable for both sleepers.
Hot Sleepers
The coil system allows continuous airflow through the mattress core. Dense foam on top of coils sleeps cooler than all-foam alternatives.
From delivery to warranty.
Every purchase includes premium service. Helix backs it with the longest warranty in our store.
Free White Glove Delivery
Free delivery to your room of choice anywhere in greater Los Angeles. Our team sets up your new mattress and removes your old one at no extra cost. Same-day delivery often available.
120-Night Comfort Exchange
Sleep on the Core Twilight for up to 120 nights. If it is not the right comfort level after 30 days, exchange it for a different Helix model or exchange for a different model at no additional cost.
Limited Lifetime Warranty
Helix Sleep offers an industry-leading 20-year warranty covering manufacturing defects. LA Mattress Store coordinates any warranty claims on your behalf.
Try it before you buy it.
Hybrid has a distinct feel that is best experienced in person. As an authorized Helix Sleep dealer, we carry the full Dawn lineup in all five of our Los Angeles showrooms. Walk in, lie down on all three firmness levels, and take your time.
- Compare Core Twilight, Luxe, and Elite side by side
- Expert sleep consultants who know Helix profiles
- Price match guarantee on every Helix Sleep model
- Free White Glove delivery, setup, and old mattress removal
- Same-day delivery available throughout Los Angeles
Legacy Helix collection.
All Dawn mattresses share the same firm 8/10 profile with individually wrapped coils. View all Helix mattresses.
Core Twilight 11.5"
Entry-level firm hybrid. Dense foam + wrapped coils at $1,099.
Currently Viewing
Dawn vs. Twilight.
Helix offers two firm hybrid collections. The Dawn is the premium flagship. The Diana offers firm hybrid at a slightly lower price point.
| Core Twilight 11.5" | Core Twilight 13.5" | Twilight Firm 11.5" | |
|---|---|---|---|
| Height | 15" | 15" | 14" |
| Firmness | Firm (7-8/10) | Medium (5/10) | Firm (7-8/10) |
| Hybrid | Hybrid | Hybrid | Firm Hybrid |
| Cover | Breathable Knit | Breathable Knit | Breathable Knit |
| Warranty | 20 Years | 20 Years | 20 Years |
| Best For | Back sleepers, natural firm | All positions | Budget natural firm |
| Price (Queen) | $3,899 | $3,899 | $3,549 |
What sleepers are saying.
No reviews yet. Be the first to share your experience.
