Quantity: 4 pieces Length: 20*25 cm, the longest stretch is 60 cm Material: stainless steel Range of use: mattresses, sheets, mattress pads, summer mats, sofa cushions, tablecloths. . . Suitable for all sizes of sheets: bed sheet gripper, bed sheet gripper, bed sheet gripper will fit all sizes of bed sheets, including: twin, twin XL, full size, full XL, queen, king, and even king Bed sheets. Sheet safety clip and clip: The sheet corner is made of high-quality nylon elastic cord and metal plating, and the soft plastic clip can be firmly grasped. Unlike other sheet clips, this will protect your sheets from tearing, while still being able to secure them to your mattress. Adjustable Sheet Straps: These fitted sheet clips with elastic straps provide the required tension and fit all edges of the sheets, suitable for heavy duty use. Easy to put on, adjustable length to provide the desired tension, adjust the sheet sling to meet your personal needs. Wide Compatibility: Our sheet straps are suitable for fixed sheets and flat sheets; these straps can also be used as tablecloth covers, ironing board covers, mattress pads, grill covers, car seat covers, scooter seat covers, sofa seat covers, chair seat covers, etc. Good quality product