Durable & PracticalThe Bed Sheet Fasteners are made of sturdy chrome metal clips and heavy duty elastic bungee cords, which is strong and durable, keeping sheets in place without fixing sheets. The built-in plastic fixing system preventing the bed sheet damage . Easy to apply and remove. Easy to UseEasy to put on, keeping corners in place with ease. Simply secure the bed sheet clips tp the corners of your bedsheet. Slide it underneath the mattress and adjust the buckle for greater tension without lifting the bed. let you hassle-free about the frequent sliding. Say goodbye to messy or wrinkled sheets. Adjustable Elasticity Straps Adjustable sheet straps with durable elasticity, the sheet fasteners can be adjusted from from 8.3 to a maximum of 13, the max stretch length up to 70cm(27.6inch). The slide buckle design allow you to lengthen or shorten the sheet stays depending on your use. Work great on keeping corners in place all the time. Strong CompatibilityNot only Fits all kinds of mattress sheet sizes, such as Twin, Twin XL, Full, Full XL, Queen, King. But also fit to fitted or flat sheets on different type of beds: standard size, air mattresses,pillow top beds, odd shaped beds, foam beds,ect. Usefulsheet keepers. Wide ApplicationThe professional Bed Sheet Holder Straps is Ideal for sheet, mattress protectors, tablecloths, grill covers, cars seat cover, boats seat cover,ironing covers, motorcycle seat cover, scooters seat cover, cushion covers,chairs seat cover and more.