The must have backpack for your beach adventures. Spacious, waterproof with adjustable volume, Ripcurl SURF SERIES 30L Backpack is ultra-light with durable fabric made of 600D Nailhead DOBBY polyester. All your belongings will be safe and dry. Say goodbye to the moisture from the sand and the heartbeat on the boat. And when winter comes you will walk comfortably in the rain. Trust us, a waterproof backpack is never a poor buy.