A. Wear-resistant and waterproof protection: This waterproof longboard bag is wear-resistant and waterproof, helping prevent the skateboard from being scratched and damaged. B. Easy to carry and store: This skateboard storage backpack is lightweight and foldable, making it relatively easy to carry and store. The compact folding structure can be installed on the handlebars of an electric bicycle for convenient use. C. Sturdy shoulder strap: The reinforced single-shoulder strap is designed with a strong and durable reinforcement for convenient carrying. The rope lock design enhances comfort. D. Adjustable shoulder straps: This longboard bag is equipped with adjustable shoulder straps, suitable for a large number of people. It can be used as a single-shoulder skateboard bag or a double-shoulder backpack.