• Twilight Core mattress by SleepCity – High-quality Hybrid Mattress for better sleep.
  • Twilight Core mattress by SleepCity – High-quality Hybrid Mattress for better sleep.
  • Twilight Core mattress by SleepCity – High-quality Hybrid Mattress for better sleep.
  • Twilight Core mattress by SleepCity – High-quality Hybrid Mattress for better sleep.
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Twilight Core mattress

$799.00
$799.00
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The Helix Twilight Core is an 11.5-inch firm-feel hybrid built for back and stomach sleepers and anyone who likes to sleep on top of the bed rather than sink in. Durable memory and responsive comfort foams keep surface sink to a minimum, while up to 1,000 individually wrapped coils deliver strong spinal support, airflow, motion isolation, and reinforced edges.

  • Firm comfort foams and up to 1,000 wrapped coils keep the spine aligned and lifted for back and stomach sleepers.
  • Up to 1,000 individually wrapped coils help minimize motion transfer while reinforcing the edges.
  • A soft Breathe Knit cover promotes airflow, with an optional GlacioTex cooling pillow-top upgrade.
Mattress height
11.5 in
Sleep type
Back sleepers; Stomach sleepers; Combination sleepers
Mattress type
Hybrid Mattress
Comfort feel
Firm

Firmness Scale

8.0

  1. 1–3 Plush
  2. 3–4 Medium Plush
  3. 4–6 Medium
  4. 6–8 Medium Firm
  5. 8–9 Firm
  6. 9–10 Extra Firm
Bedding size
Cover

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Subtotal
$799.00

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Certifications

Certification details vary by brand and model. A SleepCity expert can help confirm materials, foams, and manufacturer-backed claims for this exact product before you purchase.

Delivery & Returns

SleepCity serves Southeast Texas and Southwest Louisiana with local delivery on selected mattress purchases. We will confirm delivery timing, setup options and pickup availability before checkout. All sales are final; no refunds. Qualifying mattresses delivered within our regular local delivery areas may be eligible for one comfort exchange within 120 nights, after a minimum 30-night break-in period. A $249 exchange fee applies. See our Return & Comfort Guarantee Policy for all eligibility requirements and exclusions.

Warranty

Warranty coverage is provided by the manufacturer and varies by product. SleepCity can help compare coverage, confirm what is included, and point you to the right registration details.

Why SleepCity?

SleepCity pairs trusted mattress brands with local showroom guidance, financing help, and delivery support, so the experience stays clear from selection through setup.

Inside the Helix Twilight

See how Helix Twilight combines firm memory-foam comfort, responsive alignment layers, and individually wrapped coil support to shape its firm feel, cooling, and support.
Twilight Core mattress construction

  1. Cooling Cover + Memory-Foam Comfort

    A breathable Breathe Knit cover or optional GlacioTex cooling pillow top sits above SupremeSupport memory foam and Gel Memory Foam for a cool, supportive surface with minimal sink.

  2. Responsive Alignment Layers

    Premium Responsive Foam layers keep back and stomach sleepers lifted and aligned on top of the mattress rather than sinking in.

  3. Wrapped Coil Support + DuraDense Base

    Up to 1,000 individually wrapped coils reinforce the side edges, limit motion transfer, and promote airflow over a stable DuraDense Foam base.

OVER 5,000 CUSTOMER REVIEWS

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Why shop at SleepCity

Local Delivery

Delivery and setup options for Southeast Texas and Southwest Louisiana.

Comfort Guidance

Help before and after purchase so the fit feels right at home.

Trusted Local Stores

Real showroom support from a team that knows the region.

Price Protection

Clear offer comparisons and shopper-first guidance.