Overfilled Baffle Box Plush Featherbed Mattress Topper, White - California King Overfilled Featherbed Mattress Topper 100% Cotton Cover, Quilted 2" Side Wall with 2 Piped Seams Baffle Box Construction, Filled with Waterfowl Feathers Exterior has a 210 Thread Count California King: 72" W x 84" L x 2"H, 15 lbs of Fill