Memory foam: Designed to support your head, back and lower body throughout the night. Bed sale: Get a 25cm depth quilted memory foam mattress. Safe: Hypoallergenic and compliant with UK fire safe regulations. Design: Medium-firm comfort with 13.5 open coil bonnell spring for a longer life. Mattress depth: 9-10" (25cm). Size options: Choose from six sizes (see dimensions in Full Details). Quilted Memory Foam Mattress | Living Social