ADJUSTABLE & ELASTIC: Our sheet clips are adjustable from 6.3" to 12" (16cm to 31cm), and the maximum stretch length can reach 26.8" (68cm). The wide elastic band can withstand strong pulling force, keeping the sheets firm, tight and neat, suitable for crib, single, double, queen and king size beds. Say goodbye to messy or wrinkled sheets and say goodbye to worries forever. QUALITY MATERIAL: The fitted sheet straps are made of high-quality polyester elastic bands, durable plastic buckles and heavy-duty metal clips, which are not easy to unravel or break. The latex in the clips can avoid damaging the fabric. We have been rigorously tested to ensure that each sheet clip is in good working condition. PRACTICAL FITTED SHEETS CLIPS: These multi-functional straps are a must-have for wrinkled sheets. They can be used to secure flat or fitted sheets, as well as other covers including hospital sheets, sofa cushions, mattresses, tablecloth covers, chair, boat, car and motorcycle seat covers, ironing board covers, tablecloths, sofa covers and more. However, sheet holders cannot be used on thick fabrics such as blankets. EASY OPERATION: Installing and removing our sheet clips/ties is very simple and can be done in a few simple steps. The sturdy metal clips bite the edges and corners of the sheets, ensuring a secure grip, keeping the sheets firmly in place. No more worrying about the sheets slipping off during daily cleaning.