The package contains: 2 sets of bed sheet holder straps, 4 pcs in black and 4 pcs in white. Don't worry about messy or wrinkled sheets.The safety clamp is more durable: Bed sheet holder straps is metal, and the teeth in the clamp are plastic. It not only helps to hold the sheets firmly, but also protects the sheets, so you don't have to worry about tearing the sheets.Adjustable Length: Equipped with elastic belt, can provide the required tension, suitable for various types of bedding, adjust the bed sheet garters according to your personal needs.Easy to use: just fix 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 bed sheet. Avoid the trouble of lifting or turning a heavy mattress.Wide Compatibility: These bed sheet grippers fit with various sheets, it could be used on bed sheets, Mattress Covers, Sofa Cushion, Baby cot, Hospital Beds, Inflatable Beds and more.Specification: Color: Black/White Material: Elastic sheet bands + plastic teeth insideof the metal clamps Package Included: 2 Sets bed sheet holder straps (4 x Black Bed Sheet Straps, 4 x White BedSheet Straps) Feature: 1. As we know, triangle is more stable than othershape. So our triangle bed sheet suspenders can keep your bed sheet tight allthe time. 2.Contact us if you have any question with the products. We will solve theproblem for you immediately. Just remember that your satisfaction is our firstpriority.