The COOS BAY durable universal weight bag is manufactured from high-quality 600D Oxford fabric with a PVC coating, offering superior strength and waterproof performance compared to most alternatives on the market. Designed to be used without pre-filled materials, each bag can hold up to 45 lbs. of ballast, including sand, rocks, gravel, snow, dirt, or other suitable contents. The sand bag is equipped with two securely stitched buckle fasteners, ensuring a stable and firm attachment to the frame. Featuring a large top opening, it allows for quick and convenient filling with sand or other materials. This weight bag is ideal for stabilizing instant canopies, pop-up tents, camping sun shelters, and sports umbrellas. Color: Gray.