This is a 4ft6 by 6ft3 standard UK double bed size mattress, (135cm x 200cm) by around 9" (22cm) deep approx. Please check that this is the correct size prior to ordering to avoid disappointment. Super comfy medium soft feel, deep filled 9" deep, microquilted coil sprung mattress, luxurious super soft "Open Flame" design microquilted Cooltouch sleeping surface for additional support and comfort and an anti-slip base panel. This single sided mattress with its modern and stylish "Diamond" effect micro-quilted border (symbolic of the Diamond quality and comfort of this mattress) should be rotated regularly for best results. A UK made mattress that is fully compliant with all relevant UK fire safety regulations for domestic use. BS 7177 : 2008 (low hazard) Compressed, vacuum packed, rolled and boxed for ease of handling. Please allow several hours for your mattress to air to size prior to use. (note that rolled mattresses do not have side supports) Packaging is for transportation only. Please do not leave mattresses rolled for more than 7 days from receipt.