NO LONGER LOOSE: Upgraded O-ring buckle, totally sealed design, fixed sheet straps. Ensure that the installation and use effect is durable. No worries about the strap popping out FEATURES: Stable triangle design, 6 Sides/12 Points Sheet Clips, crisscross side to side, adjustable bed sheet gripper at the corners, can be clipped on at 12 points, and holds the sheets firmly in place. HARMLESS & DURABLE. Buckle clips design and built-in plastic clenching system protects fabric from harm and no damage caused to your bed sheet,able to secure the sheets on your mattress tightly SAFE MATERIAL. The Bed Sheet Holder Straps is made of of high quality elastic band and metal clips with soft plastic, which make it durable, colorfast and can prevent any rust. MUTI-FUNCTION. Several simple steps to install and can hold your sheets tightly, secure any size fitted sheets, flat sheets, mattress pads, bed sheets, mattress pads, tablecloths, ironing board covers, slipcovers, sofa cover and more.