Summit Hybrid Plush Mattress — 15",CoolStream Fabric, Titanium Memory Foam, Ice Flex Cooling, 7-Series Pocketed Coils, 20-Year Warranty | From $897.75
MATTRESSES & TOPPERS · MATTRESSES & ACCESSORIES
CoolStream Fabric. High Density Titanium Memory Foam. Ice Flex Cooling Bands. CertiPUR Comfort Layer. 7-Series Individually Pocketed Coils. Foam Encased. GreenGuard Gold. The Summit Hybrid Plush — 15" of Deep Pressure Relief and Active Cooling in Twin Through Eastern King.
Twin XL $897.75 · Full $1,080.00 · Queen $1,127.25 · California King $1,397.25 · Split CK $897.75 · Eastern King $1,397.25 · 15" profile · Plush comfort · CoolStream fabric cover · High density titanium memory foam · Ice Flex Cooling Bands · CertiPUR comfort layer · 7-Series individually pocketed coil system · Foam encasement · GreenGuard Gold certified · 20-year warranty · Bed-in-Box
Quick Answer: The Summit Hybrid Plush is a 15" luxury cooling hybrid mattress available in Twin XL ($897.75) · Full ($1,080.00) · Queen ($1,127.25) · California King ($1,397.25) · Split CK ($897.75) · Eastern King ($1,397.25). CoolStream fabric cover, high density titanium memory foam, Ice Flex Cooling Bands for temperature regulation within the comfort layer, CertiPUR-US certified transition foam, and a 7-Series individually pocketed coil system with foam encasement. Plush comfort for deep pressure relief. GreenGuard Gold certified. 20-year warranty. Ships Bed-in-Box.
The Summit Hybrid Plush is built around the problem that most plush mattresses fail to solve: deep, pressure-relieving plush comfort that does not sleep hot. Standard plush mattresses use thick foam comfort layers that provide the desired cushioning but trap body heat within the foam — the softer the surface, the more body contact area, and the more heat accumulates through the night. The Summit Hybrid Plush addresses this with a three-tier cooling architecture that operates at every level of the mattress: CoolStream fabric at the surface, Ice Flex Cooling Bands within the comfort layer, and titanium infusion within the memory foam itself. The result is a plush comfort hybrid that delivers the deep shoulder and hip pressure relief that side sleepers need, without the heat retention that makes most plush mattresses uncomfortable for those who sleep warm.
The 7-Series individually pocketed coil support system provides the structural counterbalance to the plush comfort layer — independent coil response that prevents the excessive hip sinkage that undermines lumbar support on a foam-heavy plush surface, while the foam encasement creates consistent edge-to-edge stability across all available sizes from Twin XL through Eastern King. At 15" the Summit Hybrid Plush provides a substantial sleep surface with the depth of a premium luxury hybrid at a price that reflects the quality of its cooling and coil technology.
Six-Layer Cooling Hybrid Construction. Every Component Explained.
LAYER 1 — COVER
CoolStream Fabric
CoolStream is an engineered cooling fabric that actively conducts body heat away from the sleep surface — it dissipates heat rather than reflecting it back toward the sleeper. On a plush mattress where the body sinks deeper into the comfort layer and surface contact area is maximised, an active cooling cover fabric is not a luxury feature but a functional necessity. CoolStream addresses the heat concentration at the skin-to-mattress contact zone before it has the chance to migrate into the comfort layers below — the first line of the three-tier cooling defence.
LAYER 2 — COMFORT
High Density Titanium Memory Foam
Titanium-infused high density memory foam is the comfort layer that defines the plush feel — deep, slow body contouring that maps the shoulder, hip, and lumbar curve precisely and provides sustained pressure relief throughout the night. Titanium particle infusion improves the foam's thermal conductivity, drawing heat away from the body as it contours — addressing standard memory foam's primary weakness in a plush application. High density formulation maintains the plush calibration over the 20-year warranty period, preventing the excessive softening that causes plush mattresses to become unsupportive over time.
LAYER 3 — COOLING
Ice Flex Cooling Bands
Ice Flex Cooling Bands run through the comfort layer, providing the second tier of temperature regulation — within the foam stack itself rather than only at the surface. The bands flex with the plush compression cycles as the body sinks into the comfort layer, and dissipate the heat that builds up within the deep compression zone of a plush surface. For sleepers who run warm and have previously found plush mattresses uncomfortably hot after the first few hours of sleep, the Ice Flex bands address the interior heat accumulation that CoolStream alone cannot reach.
LAYER 4 — TRANSITION
CertiPUR Comfort Layer
The CertiPUR-US certified transition foam provides a graduated firmness layer between the plush memory foam above and the coil support core below — preventing the abrupt hardness transition that undermines a plush hybrid's feel and creating a smooth, layered pressure gradient from the soft surface through to the structured coil foundation. CertiPUR-US certification independently confirms the foam was made without ozone depleters, PBDE flame retardants, mercury, lead, formaldehyde, or phthalates — covering the foam component with independent certification that complements GreenGuard Gold at the full-mattress level.
LAYER 5 — SUPPORT
7-Series Individually Pocketed Coil System + Foam Encasement
The 7-Series individually pocketed coil system is the structural counterbalance to the plush comfort layer — each coil responds independently to body weight without transmitting force laterally, providing targeted support beneath the deep comfort compression. In a plush hybrid specifically, the coil system's resistance calibration determines whether the mattress delivers deep pressure relief with structural support, or merely sinks without returning — the 7-Series coil ensures the former. Foam encasement at all four perimeter sides creates consistent edge stability across the full size range from Twin XL through Eastern King.
CERTIFICATION
GreenGuard Gold Certified
GreenGuard Gold is UL's most rigorous indoor air quality certification — independent testing across over 10,000 volatile organic compounds with the strictest limits for products used in sleeping environments. On a plush mattress where the sleeper maintains deep, sustained contact with memory foam comfort layers through the night, GreenGuard Gold provides independent confirmation that no harmful VOC emissions from the mattress enter the bedroom air. Combined with CertiPUR-US foam certification, the Summit Hybrid Plush carries dual independent air quality certifications.
Three-Tier Cooling Architecture — Why One Cooling Layer Isn't Enough for Plush Comfort.
Plush mattresses generate more retained heat than medium or firm surfaces for a structural reason: deeper body compression creates more body-to-foam contact area, and more contact area means more heat transfer from the body into the foam. A single cooling layer — a cooling cover fabric alone, or a gel-infused foam layer alone — addresses one point of heat accumulation but not the full stack. The Summit Hybrid Plush applies cooling technology at three independent points in the mattress construction:
| Cooling Layer | Where It Acts | What It Addresses |
|---|---|---|
| CoolStream Fabric Cover | Surface — skin-to-mattress contact | Immediate surface heat — dissipates body heat at first contact before it enters the foam |
| Ice Flex Cooling Bands | Interior — within the comfort layer | Accumulated interior heat — manages temperature that builds up within the deep compression zone |
| Titanium Memory Foam | Within the foam — molecular level | Foam conductivity — titanium particles improve thermal conductivity of the memory foam itself |
💡 For sleepers who have tried plush mattresses and found them too warm, the Summit Hybrid Plush's three-tier cooling is the structural response to that specific problem — not a marketing claim but an engineering approach applied at three separate points in the mattress construction.
Who Is This Mattress For? 4 Scenarios.
Scenario 1: You are a side sleeper who needs deep pressure relief at the shoulder and hip — and has previously found plush mattresses too warm to sleep on comfortably through the night.
Side sleeping requires plush pressure relief at the shoulder and hip — the narrow contact surface of a side sleeping position concentrates all body weight on two pressure points that need cushioning. The titanium memory foam provides that deep cushioning. But side sleepers who run warm face a paradox: the soft surface they need for pressure relief is the same feature that traps heat. The Summit Hybrid Plush resolves this paradox directly — delivering the plush pressure relief of titanium memory foam with the CoolStream cover and Ice Flex bands actively managing temperature within the comfort zone simultaneously. The 7-Series pocketed coils beneath ensure lumbar alignment is maintained despite the plush surface depth.
Scenario 2: You want a plush luxury hybrid in a smaller size — Twin XL ($897.75) for a single sleeper, Full ($1,080.00) for a guest bedroom or smaller room — with the same premium construction as a Queen or King.
Premium cooling hybrid construction is rarely available in Twin XL or Full sizes — most manufacturers apply their best technology to Queen and King sizes where the price premium is more easily justified. The Summit Hybrid Plush is available across the full size range from Twin XL through Eastern King at the same construction specification — CoolStream, titanium memory foam, Ice Flex, CertiPUR, 7-Series pocketed coils, foam encasement, GreenGuard Gold, and 20-year warranty — regardless of size. For a single adult sleeper on a Twin XL or a guest bedroom Full, this delivers the same premium plush hybrid quality as the Queen ($1,127.25) or King ($1,397.25) variants.
Scenario 3: You share a Queen, King, or Eastern King and want motion isolation — each partner's movement absorbed without transferring to the other side — on a plush shared surface.
Motion isolation on a plush mattress is a more demanding engineering challenge than on a firm one — soft comfort layers transmit surface movement more readily than firm ones. The Summit Hybrid Plush's 7-Series individually pocketed coils provide independent coil response that minimises lateral force transfer between sleeping zones, while the memory foam's deep body-contouring absorbs surface-level movement before it reaches the coil layer. For couples where one partner is a restless sleeper or has a different sleep schedule, the Summit Hybrid Plush's dual-layer motion absorption — foam above, independent coils below — delivers the motion isolation a shared plush surface requires. Available in Queen ($1,127.25), California King ($1,397.25), and Eastern King ($1,397.25).
Scenario 4: You want a GreenGuard Gold and CertiPUR dual-certified plush mattress — the highest independent air quality standards — for a bedroom where chemical sensitivity or indoor air quality is a priority.
On a plush mattress where the sleeper's face is in close proximity to the comfort surface for extended periods — particularly in the deep plush compression position of side sleeping — indoor air quality from the mattress is a meaningful concern. GreenGuard Gold at the full-mattress level and CertiPUR-US at the foam component level provide the most comprehensive independent certification available for mattress air quality. For chemically sensitive sleepers, those with respiratory conditions, or households with children sharing or near the mattress, dual certification provides the highest available independent assurance of clean sleep environment materials.
Product Specs at a Glance
| Model | Summit Hybrid — Plush |
| Comfort Level | Plush |
| Profile / Height | 15" |
| Cover | CoolStream fabric — active heat dissipation at surface |
| Comfort Layer | High density titanium memory foam — deep body contouring, three-tier cooling |
| Cooling System | Ice Flex Cooling Bands — temperature regulation within the comfort layer |
| Transition Layer | CertiPUR-US certified comfort foam |
| Support Core | 7-Series individually pocketed coil system — independent response, minimal motion transfer |
| Edge Support | Foam encasement — full-perimeter stability edge to edge |
| Certifications | ✅ GreenGuard Gold · ✅ CertiPUR-US foam |
| Warranty | ✅ 20 years |
| Best For | Side sleepers · Warm sleepers needing plush · Couples needing motion isolation · Chemical-sensitive sleepers |
| Available Sizes & Pricing |
Twin XL — $897.75 Full — $1,080.00 Queen — $1,127.25 California King — $1,397.25 Split CK — $897.75 Eastern King — $1,397.25 |
| Packaging | Bed-in-Box — compressed for delivery, expands to full 15" profile |
Bed-in-Box setup: Unroll the Summit Hybrid Plush on your bed frame immediately after delivery. Allow 24–48 hours for the titanium memory foam and coil system to fully decompress and expand to the 15" profile before assessing the plush comfort feel — the memory foam requires time to return to its full depth from the compressed packaging state. Deep-pocket fitted sheets rated for 16"+ depth are required for the 15" profile.
Complete Your Sleep Setup.
- Mattress Pads & Protectors — a waterproof mattress protector is essential for a mattress at this investment level; the 300 Thread Count Cotton Sateen Waterproof Mattress Pad ($52.11) provides waterproof protection while maintaining breathability over the CoolStream cover
- Sheets & Pillowcases — deep-pocket fitted sheets rated for 16"+ depth are required for the 15" profile; confirm pocket depth and correct size from Twin XL through Eastern King before purchasing
- Summit Hybrid Medium — if you are a back or combination sleeper rather than a primary side sleeper, the Summit Hybrid Medium uses identical construction with balanced medium comfort calibration
- Summit Hybrid Firm — if you are a stomach sleeper or heavier-build back sleeper, the Summit Hybrid Firm uses identical construction with firm support calibration
- Split Head Summit Hybrid Plush — if you need independent head elevation per partner on a California King or Eastern King, the Split Head version uses identical plush construction with a split head section
- View all Mattresses & Toppers →
Frequently Asked Questions
How is titanium memory foam different from standard memory foam?
Standard memory foam is a viscoelastic polymer foam that compresses slowly under pressure and retains body heat within its structure. Titanium particle infusion changes the foam's thermal properties: titanium has high thermal conductivity — it draws heat through the foam and disperses it rather than retaining it. The result is a memory foam that provides the same deep, body-contouring pressure relief of premium memory foam but with meaningfully better heat management than standard or even standard gel-infused memory foam formulations. For plush mattresses where heat retention is the primary comfort challenge, titanium infusion addresses the problem at the material level.
What is the difference between the Summit Hybrid Plush and the Split Head Summit Hybrid Plush?
The Split Head Summit Hybrid Plush uses identical construction but has the head section divided into two independent halves — for use with a compatible split-head adjustable base for per-partner head elevation. It is available in California King and Eastern King only. The standard Summit Hybrid Plush (this mattress) is a single unified mattress available in Twin XL through Eastern King including Split CK, without the split head feature. If you do not need independent head elevation per partner, or need a size smaller than California King, this is the correct variant.
Is plush comfort appropriate for back sleepers?
Plush comfort can work for average-weight back sleepers, but it is not the optimal choice. The deep compression of a plush surface can allow the hips to sink lower than the shoulders for back sleepers, creating lumbar curvature that accumulates stress overnight. The 7-Series pocketed coils in the Summit Hybrid Plush provide structural resistance that helps maintain alignment even through the plush surface, making it more appropriate for back sleepers than a foam-only plush mattress. For dedicated back sleepers, however, the Summit Hybrid Medium is the preferred choice — it provides the same cooling technology with a balanced support calibration that maintains lumbar alignment more reliably.
What pocket depth do I need for sheets on a 15" mattress?
The Summit Hybrid Plush's 15" profile requires deep-pocket fitted sheets rated for at least 16" depth — standard sheets (9"–12" pocket depth) will not stay on the corners. Look for sheets specifically labelled "deep pocket" or "extra deep pocket" and confirm the stated pocket depth before purchasing for the correct size. Browse the Sheets & Pillowcases collection and verify dimensions before ordering.
How does this compare to the Summit Hybrid Medium and Firm?
All three Summit Hybrid comfort levels — Plush (this mattress), Medium, and Firm — use identical construction: 15" profile, CoolStream fabric, high density titanium memory foam, Ice Flex Cooling Bands, CertiPUR comfort layer, 7-Series pocketed coils, foam encasement, GreenGuard Gold, and 20-year warranty. The only difference is the comfort calibration: Plush for side sleepers and those prioritising deep pressure relief; Medium for back and combination sleepers; Firm for stomach sleepers and heavier-build back sleepers. All three are available in Twin XL through Eastern King.
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