1、Secure Bed Sheet: The fitted sheet holder eliminates slipping or wrinkling problem and keeps the sheet nice and tight. Bed sheet holders fit well against mattress corners and hold tight, ensuring they don't slip or bunch up as you sleep. 2、Anti Slip: The fitted bed sheet holder straps anti slip particles on the bottom and outside, four corner pieces are large enough to go under the mattress corners well. The sheet holder clips the sheets tightly but not taut and hard to remove. 3、Easy Installation: The bed sheet fasteners don't require to lift or flip the mattress high to get the holders in place. Once in place, the sheet holders keep sheets firm and tight. What's more, not a big deal to take the bed sheet holders off and re install when washing the sheets. 4、Universal Fit: The adjustable bed sheet grippers practically fit most bed sheet sizes. You can't really see the sheet holders keep firmly heavy duty once the bed is made. Enjoy nice sheet alignment. 5、Silicone Material: The corner fitted sheet holders is made of soft silicone and hold the sheets securely without damaging the fabric of sheets. 4pcs bed sheets holders keep the mattress full tight no matter how much you toss and turn. Item Type: Bed Sheet Holders Material: Silicone Weight: Approx. 560.00g / 19.75oz Product Size: Approx. 13x10cm / 5.1x3.9in 4 x Bed Sheet Holders