Signature Design by Ashley King Size Cooling Gel Memory Foam Mattress - 12 Inch Medium Plush, Pressure Relief, Fiberglass Free, Mattress in a Box

Product Overview

This mattress measures 79.5 inches long by 76 inches wide by 12 inches thick, fitting standard king-size bed frames, though foundations and frames are sold separately. It weighs 77.5 pounds, making it relatively lightweight for easy handling. The construction includes layers of gel-infused memory foam for pressure relief and a support foam core to minimize motion transfer. The medium-plush feel is designed to cater to side sleepers and those needing softer support, as noted by reviewers who report reduced shoulder pain. It arrives in a box, requiring unboxing, cutting the protective wrap, and unrolling; expansion is quick, but residual odors may dissipate over 72 hours depending on room conditions. Care instructions specify hand washing only, and assembly is required but straightforward. The mattress is fiberglass-free and uses CertiPUR-US certified foams, tested for emissions and durability. Variants in depth may exist, as some reviews mention a 7-inch or 14-inch model, but this specific version is consistently described as 12 inches. Its portability and boxed delivery simplify setup, though edge support has been criticized by some users.

Design & Build

The mattress features a 12-inch profile constructed with layered gel-infused memory foam and a support foam core. Materials are CertiPUR-US certified, ensuring they meet rigorous standards for emissions, content, and durability, and are fiberglass-free for safety. The cover is designed for hand washing only, emphasizing easy maintenance, though spot cleaning is recommended. Aesthetics are minimalistic, with a clean finish that fits various bedroom styles. The bed-in-a-box design simplifies portability and setup, with the mattress arriving compressed and expanding upon unrolling; sharp tools like a penknife can aid in removing plastic wrapping. Durability is supported by a 10-year limited warranty, with reviewers noting the build quality feels sturdy and long-lasting, though some report concerns about edge support bulging under pressure.

Mechanically, the mattress lacks complex moving parts, relying on foam layers for sealing and support. The gel infusion in the memory foam aims to enhance cooling by dissipating body heat, while the support core reduces motion transfer for undisturbed sleep. Cleaning involves gentle hand washing to preserve materials, and the absence of batteries or electrical components simplifies care. The carry weight of 77.5 pounds makes it manageable for one or two people during setup. Reviewers praise the immediate comfort and lack of strong odors post-expansion, but a few note that full expansion and odor dissipation can take up to 72 hours depending on environmental factors like temperature and ventilation.

Performance

In terms of insulation and comfort, the gel-infused memory foam provides pressure relief and a cooler sleep surface, with reviewers reporting reduced shoulder pain and fewer nighttime turns for side sleepers. Motion isolation is effective, minimizing disturbance from partner movement, as noted by users who experience less snoring and back pain. Temperature regulation benefits from the gel infusion, though performance may vary based on individual heat sensitivity. Condensation and sweat are not commonly mentioned, suggesting adequate breathability. The medium-plush firmness offers a balance that many find comfortable, but some reviewers describe it as too soft with inadequate edge support, causing sinking when sitting on the sides.

Durability and resilience show promise, with users noting the mattress holds up well over months, and one review mentions a similar model lasting four years with heavy use. Drop or dent resistance is implied by the sturdy build, though specific impact tests are not detailed. Trade-offs include the weight of 77.5 pounds, which may challenge handling, and potential issues with edge support bulging under pressure. Cup-holder fit is not applicable, but bed frame compatibility is broad, fitting most standard frames. Real-world temperature retention is not quantified, but the cooling effect is frequently praised. Variability in firmness perception highlights that it may not suit those preferring a very firm mattress.