HARMLESS & DURABLE. Buckle clips design and built-in plastic clenching system protects fabric from harm and no damage caused to your bed sheet, to secure the sheets on your mattress tightly! SAFE MATERIAL: Bed Sheet Holder Straps is made of of elastic band with metal nickel plated clips and a built-in plastic clenching system that protects the fabric from harm. Enhance your sleeping experience: no more loose sheets in the night! EASY TO INSTALL: Only three easy steps: open the clips; put the bed sheet into clips; press the clip with the sheet. The sheet holders for corners are compatible with all size sheets: from small to king. SIMPLE INSTALLATION & 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. Colour:black Material:nylon Package Contents: 1 * 6-unit bed sheet clip 2 * long sheet clips 4 * short sheet clips Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.