4 Pieces Adjustable Sheet Stretcher, 50cm to 200cm Fixed Stretcher, Elastic Bed Straps with Adjustable Buckles for Bed Sheets, Ironing Board, Sofa, Crib Say goodbye to wrinkled sheets. No more tangled and wrinkled sheets: our sheet clips provide you with smooth, firm sheets so you can sleep comfortably. High elasticity. The belt tensioner is made of high-quality elastic fiber, with good elasticity and smooth texture. The adjustable range is 50cm to 200cm. Strong and durable. The fastener is made of strong metal clips, which can firmly fix your sheets, not easy to break, and the fastener has a long service life. Easy to fix. The sheet clip is very easy to use, you can easily put it on other bad sheets without any tools and fix the corners in place. Versatile. Professional adjustable design, suitable for all types of bed sheets, hospital beds, inflatable beds, adjustable beds, water beds, futons, RVs.