Usage Tips:UNIVERSAL FIT: Works on pool covers 3m to 7.3m wide and 8mm to 16mm thick, which are only suitable for in-ground solar pool cover rolls. Flexible - Each band is approximately 1.80m long (you can easily shorten it if you wish) and is therefore flexible. Durable and resistant: strong and durable nylon and plastic prevent straps and buttons- pressure to be protected against UV rays and chlorine for at least 1 year. Complete kit: includes 8 straps, Velcro, plates and buckles. Everything you need to attach your shade to your roller. Easy Installation: Don't waste time. Installation is simple and we provide instructions right on the packaging. 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.