E-Z UP Deluxe Weight Bags are the perfect solution for outdoor use on hard surfaces. They hold up to 45-pounds of sand per bag and attach securely to the legs of your shelter with quick release pins and heavy-duty buckle attachment straps. The large EZ-to-use buckles lock firmly and adjust to safely secure your shelter. Ready for your adventures, the heavy-duty, durable end caps are made with abrasion resistant fabric. Double cross-stitched reinforcements add toughness and durability. Upgraded #10 heavy-duty zippers allow for smoother operation and ensure sand or gravel stays inside. The rubberized carry handles give you a solid hold and help distribute weight to make for a comfortable and secure grip. A convenient name badge space makes sure no one gets a grip on your Deluxe Weight Bags.