Smart design hiking backpack. The soft and thick padded back system relieves the burden on the body, and the "Air Stripe" construction has a space in the middle of the back to reduce the surface of the ground to ensure breathability. The gear loop for the carabiner and a flood lid to prevent interference with the helmet, and the thickness of the weight is reduced to the body for a better fit. Large front opening zipper allows easy insertion and removal of packed items. Compared to the 24L and 25L models, the hip fins have pockets and are thick and firm padding, so it can be used to distribute the weight to the lower back even with heavy loads. Hip fin pocket