From the luxury brand Dorma, these anti-allergy mattress toppers will not only give added comfort, they will help prevent the growth of bacteria. ”? 100% cotton cover with 230 thread count ”? Fibres coated in Aegis Microbe Shield Technology ”? Cassette construction ”? Elasticated corner straps ”? Machine washable ”? Range of sizes available A premium 230 thread count, 100% cotton cover makes this luxurious mattress topper a delight to sleep on. Filled with 100% spiral fibre filling treated with an Aegis Microbe Shield Technology, this anti allergy bedding prevents the growth of bacterial. Featuring a cassette construction and elasticated straps with a 3cm (1″) walled edge, this mattress topper will stay securely in place and remain with an even distribution of filling. Easy to clean from the comfort of your home, this machine washable Dorma mattress topper is available in a range of sizes, so you can choose the perfect one for your bed.