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. 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 21cm Thickness Dry cleanable luxurious modal fabric zip off cover Orthopedic mattress Ecological Sanitised fabric Hypoallergenic Anti Dustmite features Made to British Standards/Regulations 5 year warranty Mattress Sizes Single 3ft (W90 x L190 cm) Small Double 4ft (W120 X L190cm) Double 4ft6 (W135 x L190 cm) Kingsize 5ft (W150 x L200 cm) Super Kingsize 6ft (W180 X L200cm) This mattress is rolled and vacuum-packed,so please allow up to 12-24 hours to expand to its natural depth before use.