PHYAIR King Mattress - 12 Inch Hybrid Gel Memory Foam & Pocketed Springs, Medium Firm with Edge Support, Motion Isolation & Pressure Relief

Product Overview

This PHYAIR mattress measures 80 inches long by 76 inches wide by 12 inches thick in the King size. It weighs approximately 51 pounds according to the specifications table, though one reviewer noted their unit weighed 60 pounds. The construction features nine layers including gel-infused memory foam and hundreds of independent pocket springs. The cover is made from breathable knitted fabric that can be hand-washed. The mattress is described as having medium firmness, which reviewers found to be a balanced 'Goldilocks' feel—neither too firm nor too soft. It comes compressed and rolled in a box for convenient delivery and setup. After unboxing, it requires 24-72 hours to fully expand to its original shape. The hybrid design combines memory foam for pressure relief with pocket springs for support and motion isolation. The gel infusion in the memory foam helps draw away heat to prevent overheating. Reinforced edge support provides consistent firmness across the entire sleep surface. The mattress is marketed for adult use and includes features like hypoallergenic materials and temperature regulation. Some reviewers mentioned the actual thickness might be closer to 10 inches rather than the advertised 12 inches. The product benefits listed include back pain relief, pressure relief, stress relief, improved sleep, and hypoallergenic properties.

Design & Build

The PHYAIR King Mattress features a 12-inch hybrid construction with nine distinct layers. The top layer consists of a breathable knitted fabric cover that can be hand-washed for maintenance. Beneath the cover, gel-infused memory foam provides contouring pressure relief while drawing heat away from the body. The core support comes from hundreds of independent pocket springs that move separately to isolate motion. These springs are arranged in zones to provide targeted support where needed most. The mattress edges are reinforced with additional support materials to prevent sagging and expand the usable sleep surface. All materials are designed to be hypoallergenic and resistant to dust mites and allergens. The mattress arrives compressed and vacuum-sealed in a box for convenient delivery through standard doorways and up staircases.

After unboxing, the mattress expands to its full dimensions within 24-72 hours. The construction maintains a medium firmness level that reviewers describe as balanced—not too firm and not too soft. The quilted surface features even stitching and a clean appearance that fits standard King bed frames. The hybrid design combines the contouring benefits of memory foam with the responsive support of traditional springs. Durable high-density foam layers provide long-term stability and maintain the mattress shape over years of use. The materials are selected to create a healthy sleeping environment with good airflow and temperature regulation. Care instructions specify hand-washing only for the cover, while the interior components require no special maintenance beyond regular rotation.

Performance

Reviewers consistently praise the mattress for its comfort and support. Many report significant improvement in back pain, with one user noting their deep sleep increased from 20 to 60 minutes per night. The medium-firm feel provides what multiple reviewers call the 'Goldilocks' balance—firm enough for proper spinal alignment but soft enough for pressure relief. The motion isolation performs well according to users, with minimal disturbance when partners move during sleep. Temperature regulation receives positive feedback, with hot sleepers reporting they stay cool and comfortable throughout the night. The edge support maintains firmness across the entire sleep surface, allowing users to utilize the full width of the mattress without feeling like they might roll off. The mattress fits standard King bed frames properly and maintains its shape without shifting or sliding.

Some performance notes include variability in actual thickness, with one reviewer measuring their mattress at 10 inches instead of the advertised 12 inches. Weight discrepancies also appear, as the specifications list 51 pounds but one user reported 60 pounds. Despite these measurement variations, users find the mattress comfortable and supportive. The hybrid construction effectively combines the pressure-relieving qualities of memory foam with the bounce and support of pocket springs. Reviewers with back pain particularly appreciate how the mattress supports their spine in various sleeping positions. The cooling properties of the gel-infused foam help prevent overheating during the night. The mattress shows good durability in initial use, with no reports of sagging or deformation in the early months of ownership. The motion isolation works effectively for couples with different sleep schedules or movement patterns.