Toweter 4 Pieces/Set Comforter Grippers Bed Duvet Donuts Holders, Keeps Corners Of Duvets Comforters Blankets In Place A set of 4 pieces, one used diagonally for each corner of the quilt. Prevent Bunching & Shifting of Comforters and Duvets. Keeps Comforter in Place. Fits duvets and comforters not thicker than 1 inch. Make your life better.