This backpack is made from 100% polyester with a PVC coating, ensuring a waterproof fabric. It features a roll-top closure with adjustable straps and includes an external zippered pocket for added convenience. The carry handle is reinforced for durability, while the ergonomic adjustable shoulder and sternum straps provide comfort during use. Additionally, the back padding is designed with breathable mesh for enhanced ventilation. Inside, you'll find an internal zippered pocket for secure storage. The bag has a volume of 20 liters (1220 cubic inches) and is easy to maintain—simply spot clean and air dry.