Canopy 4" Memory Foam Mattress Topper * Soft comfort and firm support * Immediately responds to your unique body shape, weight and warmth * Has a removable, hypoallergenic, 100% Polyester cover that"s machine washable to make life easier * 5-year warranty * Twin: 37" W x 73" L x 4" D (94 cm x 185 cm x 10 cm) * Full: 52" W x 73" L x 4" D (132 cm x 185 cm x 10 cm) * Queen: 58" W x 78" L x 4" D (147 cm x 198 cm x 10 cm) * King: 74" W x 78" L x 4" D (188 cm x 198 cm x 10 cm)