This mattress has been made using the natural Talalay, the finest latex available, to give your spine exceptional support while the high density visco-elastic memory foam layer beneath provides the best pressure relief possible. Individually wrapped spring system is included for extra comfort and support. High Density natural Talalay latex lasts a life time and retains shape. Natural ventilation keeps you cool throughout the night while providing exceptional support by conforming to your body's contours. It is a biodegradable natural product which means it is an environment friendly product. Naturally hypo-allergenic and anti-microbial, makes it a great mattress for all types of people. Specification Talalay Latex and Visco Foam with High Density Foam underneath 24cm thickness Dry cleanable silky feel modal fabric zip-off cover Individually wrapped pocket spring system Orthopaedic mattress Ecological Sanitised fabric Hypoallergenic Anti dustmite features 5 year warranty Made to British Standards/Regulations Mattress Sizes Single 3ft (W90 x L190 cm) Small Double 4ft (W120 x L190cm) Double 4ft 6 (W135 x L190 cm) Kingsize 5ft (W150 x L200 cm) Super Kingsize 6ft (W180 x 200cm) This mattress is rolled and vacuum-packed,so please allow up to 12-24 hours to expand to its natural depth before use.