The Elite mattress from Julian Bowen features a hand-tufted, luxury damask cover with a quilted border for added comfortand air vents to increase air flow. *1000 Pocket Sprung Unit *Hand Tufted *Spring Insulator Pad: 1000 gsm *Polyester Filling: 800 gsm *Luxury Damask Quilted Cover *Quilted Border with Air Vents *1 Year Manufacturer39;s Guarantee Dimensions:. *90cm: 190cm W x 91.5cm D x 23cm H *135cm: 190cm W x 137cm D x 23cm H *150cm: 200cm W x 153cm D x 23cm H Important Information:. Please note that pocket sprung mattresses must not be used with a base for which they are not designed. Slats on a bed frame should be no less than 70mm apart, to ensure the mattress receives adequate support. Failure to use an adequate base could invalidate the warranty from the manufacturer. Please check with us for more details.