Gel Mattress Overlay 39 x75 x3 Twin Size Standard Twin * Offers maximum protection to guard against the incidence of pressure sores * Viscous gel migrates through sectioned bladders to relieve pressure around bony prominences * Cover is soft non-shear nylon material that helps to reduce heat and moisture build-up * Both materials are fluid and stain resistant anti-microbial and fire-retardant * Medicare Code E0185 * Weight Capacity 250 lbs. Carton size:35x24x15