Adjustable Velcro closure keeps corners in place: The excellent closure of the adjustable fitted sheet allows for the desired tension. You can use it individually from 70 to 280 cm to give great flexibility for all beds of different sizes. Easy to put on corners: the bed clips are very easy to use thanks to their user-friendly design. You can simply put it on your bath sheet in seconds without any tools, around the corners, in place. Never damage your fabric: the closure is plastic with integrated tightening system. It can effectively hold your beds in place and protect the fabric from damage. You don't have to worry about the beds. Sturdy and Durable: The fasteners are made of sturdy metal clips and sturdy elastic cords that allow you to easily grip your bed linen securely and will not break. With the solid construction, the clasps last a long time. Make Your Life Easier: This versatile fitted sheet fastener is perfect for all types of bedding, mattress toppers, tablecloths, ironing board covers and stretch covers. It will always keep the corners in place, making your life easier. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.