CYMULA Cooling Mattress Topper features a 900GSM extra-thick 3D snow down alternative fill for superior support and comfort. Designed with a box-quilted pattern to keep fill in place, this breathable topper offers moisture absorption for a cool night's sleep. The deep pocket design fits mattresses from 8 to 21 inches deep, ensuring a secure fit even for those who toss and turn. This OEKO-TEX Standard 100 certified topper provides a soft and fluffy layer to revitalize your sleeping surface. Measurements: • Length: 84" • Width: 72" • Depth: 18" • Pocket Fit: 8"-21" • Thickness: 2"