Andux Land 4 pieces/set Comforter Clips, Bed Duvet Donuts Holders, Prevents Comforters From Shifting Inside Duvet Cover CDJ-03 Four pieces in a set,one used diagonally for each corner of the bed. Prevent Bunching & Shifting of Comforters and Duvets. Buckle design keeps corners of comforter or duvets in Place. Fits duvets and comforters not thicker than 1 inch. Four pieces in a set,one used diagonally for each corner of the bed. Prevent Bunching &amp; Shifting of Comforters and Duvets. Buckle design keeps corners of comforter or duvets in Place. Fits duvets and comforters not thicker than 1 inch.