Firm Support for Proper Spinal Alignment：Designed for sleepers who prefer a firmer feel, this 14-inch california king mattress combines dense memory foam with a strong pocket coil system to deliver consistent, balanced support—perfect for promoting healthy spinal alignment and reducing back pressure. Motion Isolation：Reinforced pocket coils isolate movement across the california king size hybrid mattress, so you can sleep undisturbed even if your partner moves during the night. A great solution for couples and light sleepers looking for a solid, stable sleep experience. Edge Support: Our 10in hybrid mattress california king size is designed with reinforced edges to provide enhanced edge support. This feature ensures that the edges of the mattress remain firm and supportive, preventing sagging and providing a stable surface for sitting. Enjoy peace of mind knowing that you can utilize the full surface area of your mattress with consistent support from edge to edge. CertiPUR-US &No fiberglass: Rest easy knowing that our calking mattresses is CertiPUR-US and OEKO-TEX Standard 100 certified, ensuring that it is made without harmful chemicals and materials.These certifications ensure a healthy and secure sleep environment for you and your loved ones. Convenient Packaging and Setup: The mattresses is conveniently compressed, rolled, and shipped in a box for easy transportation and setup. Once unboxed, it expands to its full size within 72 hours, allowing you to enjoy its luxurious comfort and support in no time.