Package includes: 4 bed sheet clips, adjustable from 30cm to 130cm. Perfect for bedding, tablecloths, ironing board covers, mattress protectors, slipcovers, etc. Heavy Duty Material: The bed sheet fasteners are made of nylon elastic band, plastic buckle, and metal duckbill clips. They are flexible, sturdy, not easy to break or deform, and durable. Strong and Durable Clips: The duckbill clips are made of nickel-plated metal and feature a built-in plastic locking system, making them sturdy and durable. They can securely hold sheets or other fabrics without slipping, but prevent the fabric from being damaged. Easy to use: fold over the extra edges and corners of the sheets, put the sheets into plastic clips, press the metal button to secure the fixed sheets, and the length of the band can be stretched to meet your needs. Widely used: the bed sheet holders fit for bed sheets, mattress covers, sofa covers, tablecloth clips or anything you want to fix, let you avoid the trouble of messy sheets, often sliding.