Stable triangle design: triple protection design, 3 sides of each corner, good stability, pull the bed sheet and linen tightly to the corners of the mattress, can prevent falling, provide a more stable and firm grip. Don't worry about messy or wrinkled sheets. No fabric damage: The duckbill clip inside is made of soft plastic, which can ensure the fabric is stretched, firmly fixed and held flat without damaging the fabric. Durable Material: Durable chrome metal clip and black elastic nylon webbing, elastic nylon webbing with good elasticity and smooth texture, the clips are not easy to break. 2.5cm wide nylon elastic band can be used repeatedly, strong and durable. Adjustable Length: Each bed sheet strap allows for your desired tension and can be adjusted from 17. 5cm to 28cm, fits all sizes of beds and sheets. Multi-function: 8 pieces per pack to meet family needs. Suitable for all types of beds, mattress covers, adjustable for bed linens, sofa pillows, duvets, mattress protectors, bedding, adjustable beds, adjustable beds, hidden beds, camping, tablecloths, ironing boards, etc.