Bed sale: Get an open sprung 25cm depth memory foam mattress. Mattress depth: 9-10" (25cm). Size options: Choose from six sizes (see dimensions in Full Details). Suitable for: All types of standard bed bases. Memory foam: Designed to support your head, back and lower body throughout the night. Safe: Hypoallergenic and compliant with UK fire safe regulations. Open Sprung 25Cm Depth Mattress | Small | Living Social