100% waterproof backpack designed to offer effective protection against bad weather. Equipped with compression straps, this backpack allows you to stabilize the contents and adjust the volume according to your needs. The rolled closure system provides increased waterproofing. A front zippered pocket offers easy access to small items. The shoulder straps are designed for optimal comfort, even during prolonged use. An emergency whistle is integrated into the chest strap for increased signaling in case of emergency.