Durableand Material: - This winter cover clip is made of butadiene,which with nice strength and good toughness, strong and reliable, will not easy to be broken. Built tough to withstand cold winter temperatures. Function: - Pool Cover Clips grip your metal wall pool's top rail like a clothespin and hold your cover in place,it can protect your swimming pool cover from strong wind and other bad weather in winter, making your swimming pool cover firmly stable on the swimming pool all winter. Wide Application: - For Swimming Pool Above Ground Winter Cover,it also can be used as greenhouse film covering clips, household folders, ,they are also suitable for sealing snack bags.. Suitable size: - The size of this clip is approx. 3.15 inch in length, 1.28 inch in width, 0.56 inch in height,small and lightweight, convenient for you to carry, which are also long enough to fix your swimming pool cover. Using winter clips will keep your cover in place all season long. This is nice tool. Note: - This clips are suitable for most permanent above ground pools or pools with metal railings; Not intended for soft-sided pools, inflatable pools such as for Intex inflatable pools and steel frame pools. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.