Sweet Jojo Designs White Goose Feather Topper Baffle Box Featherbed Mattress Cover Top-Twin Size, (39in. x 75in The 240 thread count 100% cotton cover features 2 Inch gusseted sides for firm and even support. Filled with 95% white goose feathers and 5% white goose down The cover is sewn end to end with a true baffle box construction 10 inch box stitch The fill is antibacterial treatment processed preventing growth of bacteria, fungus, mold, & mildew Dimensions: Queen (60 in. x 80 in.)  Twin (39 in. x 75 in.)