POSMOND Dual-Sided 14" California King Mattress Medium Firm & Firm Reversible Hybrid Mattress,Cooling Gel Memory Foam Mattress-in-a-Box,Pocket Coils,Pressure Relief

14 Inch California King Mattress in a Box -  Compressed and shipped in a box for easy setup and expand to full size within 48-72 hours—compatible with most bed frames, no box spring required

Flippable Dual Firmness Design - Enjoy two comfort levels in one mattress. One side offers Medium Firm support, while the other delivers Firm stability, ideal for back and stomach sleepers or those needing targeted support

Cooling Gel Memory Foam and Bamboo Charcoal Sponge Layer - The mattress features a multi-layer sponge structure with varying densities. At its core lies cooling gel memory foam, which precisely conforms to the body's contours to relieve pressure while helping regulate sleep temperature. The bamboo charcoal sponge layer absorbs moisture and reduces odors. Moreover, the porous structure of the bamboo charcoal sponge enhances the mattress's breathability, accelerating air circulation

Individually Wrapped Pocket Spring - Each spring is individually wrapped and operates independently, effectively eliminating friction noise between springs while minimizing motion transfer. Upgraded thicker spring wire provides enhanced body support, helping you enjoy a comfortable night's sleep

Multiple safety certifications - Certified by SGS as flame-retardant cotton, and the foam fillings are CertiPUR-US certified, and OEKO-TEX. This premium hybrid mattress combines comfort, support and refined design, making it the ideal choice for master bedrooms, guest rooms and upscale living spaces