Off-road cycling backpack, bicycle hydration pack, mountaineering bag, outdoor lightweight water-resistant hiking double-shoulder backpack

This off-road cycling backpack is also a bicycle hydration pack, mountaineering bag, and outdoor lightweight water-resistant hiking double-shoulder backpack. It is made of water-resistant material to cope with sudden rain during outdoor activities, and the ergonomic back design fits the back curve, reducing pressure during long-distance off-road cycling and mountaineering. It has a reasonable storage structure to meet the needs of outdoor adventure equipment storage.