1.The material of these solar blanket straps is rugged Nylon, which is firm and sturdy, they can keep the connection tight, and make sure the link solid and tough.2.Prevents straps and snaps kit from strong UV light and chlorine and ensures longer use in hot weather without damage.3.Punching design - This design can firmly stuck your solar cover. It fit for most of cover rollers/ reels. Swimming belt is one of the essential accessories in swimming equipment. It is swimming equipment that can be carried anywhere and anytime.4.To make the pool cover roller straps fix more firmly in case it is blow by strong wind, you can put off the sticky machine patches, then attach the straps with screws to the reel would make the straps more secure.5.You will have no need to worry it will be loose. The good material makes it safe and keep durable.