Material: It is made of 600D Oxford fiber, a heavy type coated with better waterproof performance PU for additional waterproofing, which is stronger than most bags in the US market. Specification: A total of 4 weight bags. Dimensions: 15.7 inches/40 cm 14 inch/35,5 cm. Stalk length: 3.5 inches/9 cm. Suitable for the leg size of 0.8 inches/20 mm to 2.36 inches/60 mm. It is suitable for any shade or tent with 18-22 lbs weight in each corner. Easy to use: Fill the weight bags with sand, gravel, snow, rock, water bottle, soil or any material. You don't need to carry extra sand while outside. (Sand is not included. Only four bags!) Suitable: Leg canopy that can be installed at any moment, opened tent or gazebo structure, caravan canopy, shelters that can be installed at the time of EZ up, camp sunset, durable universal weight bags secure the sports umbrella International products have separate conditions, are sold from abroad and may be different from local products, including compliance, age degrees and product language, labeling or instructions.