An Ortho foam quality mattress provides firm orthopaedic support when used on either a divan base or a bed frame, helping to maintain the correct alignment of the spine and neck for a healthier and comfortable nights sleep. Similar to the ortho Duo 1800 mattress, both sides of hte mattress has different modes of softness. One side is regular comfort while the other is firm comfort and with Hypo-allergic properties, this mattress is perfect for children. Specification; High Density reflex foam 11cm thickness Dry cleanable double jersey cover Zip off cover One side is regular, the other side firm comfort Orthopaedic Siliconised Fibre 5 Year Warranty Anti Dust mite Made to British standards/Regulations Hypo - Allergenic for Kids