King Mattress 12 Inch Hybrid King Size Mattress Medium Firm in a Box

King Mattress 12 Inch Hybrid King Size Mattress Medium Firm in a Box combines gel memory foam with pocket springs for cooling support for pressure relief.

Designed to fit a King size bed with 80x76 inches of surface area, this hybrid mattress blends gel memory foam with 800+ 2.0mm pocket springs to provide cooling comfort and balanced support. The edge reinforcement helps maximize usable surface while maintaining stability from edge to edge. This configuration supports a range of sleep positions, making it suitable for different body shapes and sleeping preferences.

With CertiPUR-US and Oeko-Tex Standard 100 certifications, the materials are fiberglass-free and fire compliant for safer sleeping. The individually wrapped pocket springs isolate motion to minimize disturbances, supporting couples or light sleepers. The medium-firm feel balances contouring and support for various sleep styles.

King Mattress offers a 365-night trial and Forever Service, backed by the brand owner and manufacturer to support lasting comfort. Warm tips: It will fully expand within 24-48 hours after unboxing.

Features:

• Hybrid design blends memory foam with 800+ 2.0mm pocket springs for balanced support across all sleep positions and edge reinforcement for stability
• Medium-firm comfort helps relieve pressure points and supports spinal alignment
• Individually wrapped springs minimize motion transfer for quieter undisturbed sleep
• CertiPUR-US and Oeko-Tex Standard 100 certified materials ensure fiberglass-free safety
• 365-night trial and Forever Service backed by the brand owner and manufacturer
• Care note: full expansion typically occurs within 24–48 hours after unboxing