Designed to feel comfortable and familiar to the widest possible audience the regal coil sprung aspire mattress is a great choice for a spare bedroom it features a 135g supercoil spring unit and long lasting polyester fillings finished in a soft touch micro quilted cover which provides a smooth sleeping surfacedimensionssingle w 90cm x l 190cmsmall double w 120cm x l 190cmdouble w 135cm x l 190cmking w 150cm x l 200cmsuperking w 180cm x l 200cmmattress depth 19cm