Nylon Braided The triangle bed sheet fastener strap is a genius sheet /cover fastening system which makes your life Easier and more Enjoyable.sheet elastic hold downs for bed A 3 way stable triangle design/wider elastic bands provides stable and stronger grip for heavy duty purpose. Built-in plastic clenching system protects fabric from harm and no damage caused to your bed sheet. The sheet straps clip fits with fitted sheet and flat sheet for size Twin, Twin XL, Full, Full XL, Queen, King & even up to California King sheets., Adjustable length allows desired tension. Our sheet fasteners fits with fitted sheet and flat sheet ,sofa cover, cars seat cover,tablecloths,couch seat cover,chairs seat cover and more, and make your life easier. Easy to use,Fasten 3 clips at corner of your sheets, Repeat above for all 4 corners and flip the fitted corner back down over the mattress, Adjusting the tension on the straps.They will grip your bed sheets firmly and keep your bed looks neat at all times. Why Choose Bed Sheet Fasteners? Have you struggle a lot with loose sheets or crumpled and wrinkled sheets every morning? Well, now apply Bed Sheet Straps, What a difference! The sheets are pulled right with no more wrinkles, upgraded your sleep quality; Every morning waking up the sheets were still stays on the mattress, no more remaking bed sheet every day, makes your life easier and more enjoyable. Think of it as a onetime investment to solve your wrinkled sheet woes, Get your triangle bed sheet holder straps now! Broad applicability: Fit all of mattress sizes, such as twin, twin xl, full, full xl, king, california king, queen and so on. The sheet fasteners can be also used in crib, trundle bed, camping trailer, convertible bed, or even the irregular shaped beds on most boats. Multipurposes: Not only for bed sheets but also for ironing board covers, tablecloth covers, grill covers, car/ boat seat covers and more.