Durable Polyester Material - Premium 900D polyester material for tripod stone bags is sturdy enough to hold stones, sand or photography accessories and the material is also waterproof, tear resistant and wearable. | Multipurpose - Putting some heavy objects like gravel or sand into the tripod sand bags will provide additional stability as photographing in windy days. The sandbags also can be used to store camera accessories, such as lenses and battery charger. 3 compartments help classify different items as well. | Easy to Install - You can set up the weight bag in a rapid and easy way, all you need to do is fix 3 hook and loop strips to tripod legs, then the bag can be used to place your water bottles or belongings. | Easy to Store - When not using it, you can fold the light weight tripod stone bag up conveniently and stuff the bag into your camera backpack, which add little weight to equipment you carry around. | Perfect Fit - The portable sand bags are compatible with most kinds of tripods, such as light weight tripods, travel tripods and studio tripods. The practicability of sand bags makes it an indispensable partner for any photographer.