About Grogu Backpack: With a classic look that never goes out of style, durable construction, and details for all-day carrying comfort, this customizable backpack is a must-have for the daily commute to school or occasional casual travel. This backpack will add color to any of your journeys. .: Made of 15.5 oz. Soft Nylon .: Lightweight and waterproof .: Adjustable shoulder straps