Coated with weather resistant PU, it has UV resistant, durable, and waterproof functions, with an oversized size of 34x40cm. Heavy weight bags provide a quick and easy way to ensure the safety of your tent or canopy. Perfect for outdoor activities and windy weather.Easy to use, simply wrap the Velcro strap around the tent legs, tighten the strap, and then sit down to relax. The bag will remain securely connected. Each bag can be filled with up to 13KG of sand, gravel, and soil, making it easy to place and release. Perfect for use on hard surfacesOur durable universal weight bag is widely used for bundling, stabilizing any instant leg canopy (leg sizes ranging from 15mm to 50mm), pop-up tent or pavilion structures, trampolines, camping sunshades, and sports umbrellas.The super portable backpack comes with a sturdy polyester fiber stitching handle for easy carrying. Comes with a portable bag for easy storage.The double-layer sealing durable magic band sealing can prevent sand from overflowing during use.