Cooling mattress: Get a bio clima cool mattress! Construction: 10" in depth with 11 targeted zones made of layers of memory and reflex foam. Cooling: BIO NATURE AIR COMFORT technology with air vents for breathability. Firmness: Comfortable medium-firm support - ideal for those who like to sleep on their back. Cover: Features a luxury touch quilted knit cover for extra comfort. Size: Choose from small single (2ft6), single (3ft), small double (4ft), double (4ft6), king (5ft) or superking (6ft) sizes. Bio Clima Cool Mattress | Small | Living Social