Ergonomic Support & Comfort: Designed with a high-density foam base & breathable comfort foam layer, this memory foam mattress adapts to your body for superior support. It evenly distributes weight, reduces pressure points, and enhances relaxation. Pressure-Relieving Medium Firm Support: This medium firm cali king memory foam mattress offers high-density support that cradles pressure points, promotes spinal alignment, and reduces discomfort, making it ideal for back, side, and stomach sleepers. Breathable Open-Cell Design for Cooling: Features a ventilated open-cell structure that enhances airflow & heat dissipation. This california king bed mattress ensures a cool and comfortable sleeping environment all night long, preventing overheating. Proudly Made in the USA: Our cali king mattress bed is expertly crafted with eco-friendly, CertiPUR-US certified materials - free from harmful chemicals or fiberglass. Enjoy premium comfort, safer sleep, and peace of mind night after night. CertiPUR-US Certified: Fiberglass-free & certified for durability, emissions, and performance. Our luxury medium firm mattress cali king meets strict standards for emissions, durability, & performance, offering peace of mind with every night's sleep. Available in Multiple Sizes: Cool Gel Memory Foam Mattress California King dimensions: 80" x 39" x 8-Inch. Our Memory Foam Bed Mattresses are available in King Mattress, Queen, Full Mattress, Twin XL, & Twin Mattress as well as 8, 10, 12, & 14-inch Depths.