Helix Sleep Midnight

Sources & review notes

• Exact model — Helix Midnight (standard, not Luxe). Checked 2026-10-20. One of six position-based models in the Helix Core collection — Sunset, Moonlight, Midnight, Dusk, Twilight, and Dawn — plus the higher-weight Helix Plus, which has its own review here. Helix also sells a Luxe upgrade tier of each name with different construction and pricing, so confirm the listing does not say Luxe.
• Type — Memory-foam hybrid. Checked 2026-10-20. A five-layer build pairing a breathable knit cover and memory foam comfort and transition layers with a steel pocketed-coil core and reinforced perimeter coils. All Core-collection models share this general structure with variations tuned to the target sleeping position.
• Firmness — Medium firm — 6/10 measured. Checked 2026-10-20. The independent lab measured 6 of 10 and positions the Midnight as the side-sleeper choice in the Core collection. Helix itself classifies the feel as roughly 5 to 6, so expect a true middle rather than anything firm. One feel only — the way to change firmness is to choose a different model in the collection.
• Height — About 11.5 inches (queen). Checked 2026-10-20. The independent source cited here reviews the Helix range collectively and does not publish a per-size table for the Midnight, so this figure comes from retail listings rather than from the lab. Helix’s own product page returns an error to automated requests, so confirm the height on your own listing if bedding fit matters.
• Price — Check current price — $1,183 queen with code, $1,478.75 list. Checked 2026-10-20. Recorded on the checked date with a 20%-off site code applied to the base Breathe Knit build with standard support. Helix discounts almost continuously, so the with-code figure is closer to the effective everyday price. Earlier checks could only cite the independent reviewer’s $749–$1,399 across-sizes range.
• Trial — 365-night sleep trial, 30-night break-in. Checked 2026-10-20. Helix extended its trial from 120 to 365 nights by the October 2026 check. You may request a return or exchange after 30 nights; the trial applies only to orders placed directly on helixsleep.com.
• Delivery — Free shipping in the contiguous US, ships in 3–5 business days. Checked 2026-10-20. Sold directly through helixsleep.com. Ships compressed in a box; an In-Home Setup & Removal option is offered by ZIP code at checkout.
• Returns — Full refund or exchange, nights 31–365. Checked 2026-10-20. After the 30-night break-in Helix offers an exchange of equal or greater value, or a full refund if you do not want to exchange, through night 365.
• Warranty — Limited lifetime warranty. Checked 2026-10-20. Every Helix mattress is covered by a limited lifetime warranty against defects in workmanship and materials, assuming normal wear and proper support. Earlier published terms repaired or replaced free for ten years and then charged a rising share of the retail price; confirm the current structure in the written mattress warranty.
• Firmness — Medium firm (6/10). Measured data. A true middle, and the point of the model — firm enough to support the waist, soft enough to let the shoulder settle. Helix builds firmness variation into the collection rather than into any single mattress.
• Pressure relief — 8.5 / 10 test-lab rating. Measured data. The strongest attribute, and the reason the side-sleeping scores are so consistent. Memory foam over coils cushions the shoulder and hip while the coil core prevents the deep sink an all-foam bed would allow.
• Cooling — 8 / 10 test-lab rating. Measured data. Good for a memory-foam hybrid. Coil airflow offsets the heat a contouring comfort layer would otherwise trap.
• Motion isolation — 7.5 / 10 test-lab rating. Measured data. Adequate for most couples. The memory-foam layer absorbs a fair amount, though a coil core still transmits more than an all-foam mattress would.
• Response / bounce — 7 / 10 ease-of-movement rating. Measured data. The weakest measured attribute. The contouring that produces the strong pressure relief is the same thing you have to climb out of when changing position.
• Edge support — 8 / 10 test-lab rating. Measured data. Solid, thanks to reinforced perimeter coils that resist deep sinkage when getting in and out of bed.
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