Package includes: 2 sets of sheet fixing straps, 4 pieces. Black 4 pieces. White. No need to worry about dirty or wrinkled sheets. Safe Clips are More Durable: The straps of the sheet fixer are metal, and the teeth of the clips are plastic. It not only helps to fix the sheets securely, but also protects the sheets, so you don't have to worry about the sheets being torn. Adjustable Length: Equipped with elastic bands, which can provide the necessary tension and fit different types of bedding, the sheet tie straps can be adjusted according to your personal needs. Easy to Use: Simply attach the 2 clips at both ends to any corner of the mattress. Slide it under the mattress and then secure the other end of the clip to the sheet. Avoid struggling to lift or turn a heavy mattress. Wide Compatibility: These sheet clamps are compatible with a variety of sheets, and can be used for bed sheets, mattress covers, sofa cushions, cribs, hospital beds, air beds, etc. Specifications: Color: Black/White Material: Elastic sheet straps + Plastic teeth inside metal clips. Package List: 2 Sets of Sheet Straps (4 x Black Sheet Straps, 4 x White Sheet Straps) Features: 1. As we all know, triangle shapes are more stable than other shapes. So our triangle sheet holder can always keep your sheets tight. 2. If you have any questions about the product, please contact us. We will solve the problem for you immediately. Remember, your satisfaction is our top priority.