Available in a variety of depths measure the depth of your mattress for a perfect fit luxurious silky feel 100% cotton sateen with a luxurious 500 thread count woven using the finest yarns, this dorma 500 thread count 100% cotton sateen range has a lustrous sheen, supremely soft handle and elegant drape'. '.strtoupper('t')he sheet is available in various depths to give you the perfect fit for your mattress, making it exquisitely comfortable to sleep on'. '.strtoupper('b')oasting an understated yet sophisticated simple design, this sheet is available in a range of colours and coordinating items.dormaestablished in 1921, dorma is a british heritage brand synonymous with quality, luxury and impeccable attention to detail'. '.strtoupper('d')orma our name is your guarantee.