Length: Adjustable from 11.8" to 47" (30cm to 120cm), providing great flexibility and meeting various household needs. Protection: The closure is constructed of system plastic that does not harm the fabric, with metal clasps for a secure grip. Sturdy and durable: The fasteners are made of heavy-duty metal clips and elastic tensioners, designed to firmly hold bed sheets and resist breakage, ensuring long-term use. Multi-Function: Adjustable professional design fits all types of sheets and beds, including hospital beds, air beds, adjustable beds, water beds, futons, RVs, and hide-a-beds. Easy to use: The bed sheet ties feature a user-friendly design, allowing quick attachment without tools, keeping corners securely in place. Product Information: Size: M-8Pcs | Color: Black | Package dimensions: 17.6 x 12 x 4 cm; 173 grams | Item weight: 173g. These sheet clips firmly secure bed sheets, eliminating concerns about loose or wrinkled bedding. Integrated plastic stretcher system helps protect fabric. Suitable for fitted or flat sheets on various beds, including standard beds, irregularly shaped beds, foam beds, pillow top mattresses, air mattresses, RV beds, and travel trailers. Additional uses include tablecloths, grill covers, car seat covers, boat seat covers, motorcycle seat covers, scooter sofa seat covers, chair covers, mattresses, and ironing board blankets.