Length: Adjustable from 11.8" to 47" (30cm to 120cm), providing great flexibility and meeting various household needs. Protection: Closure constructed with system plastic that does not harm fabric, combined with metal clasps for a secure grip. Sturdy and durable: Fasteners made of strong, heavy-duty metal clips and elastic tensioners, designed to firmly hold bed sheets and resist breakage, ensuring long-lasting 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: Bed sheet ties feature a user-friendly design, allowing quick attachment to bed sheets in seconds 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 hold bed sheets in place, eliminating concerns about loose or wrinkled sheets. Integrated plastic stretcher system helps protect fabric from damage. Suitable for fitted sheets or flat sheets on various bed types, including standard beds, irregular-shaped beds, foam beds, pillow top mattresses, air mattresses, RV beds, and travel trailers. Other uses: Tablecloths, grill covers, car seat covers, boat seat covers, motorcycle seat covers, scooter sofa seat covers, chair covers, fitted sheets, mattresses, and ironing board blankets.