The Serta 5 Star Mattress 14 in. Plush delivers comfort and convenience. Ourmattress in a box fully expands quickly so you can sleep on it right away. This quilted innerspring mattress features our individually-wrapped coil system for durability and all-night support. PillowSoft Aire Foam offers airflow and enhanced cushioning for exceptional comfort. Plus, Serta PillowSoft Foam provides gentle contouring support while CoolTwist Gel Memory Foam for additional cooling comfort. Looking for lower back care? A gel foam band provides our signature zoned comfort for the lumbar and hips. CoolTwist Gel Foam helps dissipate heat and Cool-to-the-touch CoolFeel Fabric helps you to rest well and wake up refreshed while our antimicrobial technology keeps your mattress fresh and clean from odor-causing bacteria. The Serta 5 Star Mattress-from box to bed in seconds. Size: california king. Material: Polyester Blend.