When going on a hike, most people just bring a bottle of water & their phone for pictures. However, always remember safety first. Although having a backpack can be a pain while doing long hikes, it is needed for supplies & things in case of an emergency. The average size backpack is around 40-50L. This outdoor backpack is 65L & is ultra-lightweight & waterproof! This is a great pack for the average hike, to backpacking, & even great for camping. Specifications Outdoor backpack for camping or hiking Size: 45cmx25cmx23cm Capacity: 65L Breathable Lightweight Expandable backpack size Standard Shipping 1-2 weeks. Expedited shipping is available 65L Outdoor Waterproof Backpack