This 14 in. king hybrid mattress combines the reliable support of innersprings with the plush comfort of dual-layer memory foam, striking an optimal balance between softness and support to effectively relieve back and neck pressure points. It holds both CertiPUR-US and OEKO-TEX certifications, ensuring the materials are free from harmful substances like heavy metals, non-toxic and odor-free. Featuring multi-layer breathable foam technology, it boosts air circulation to keep sleepers cool and dry through the night. Compressed, vacuum-sealed and rolled for convenient delivery, it fits most bed frames and fully expands within 72 hours after unpacking. Backed by a 100-night trial and a 10-year limited warranty, along with dedicated customer support, this mattress promises a restful, rejuvenating sleep experience. Size: medium.