1. Applicable scene: outdoor sports
2. Capacity: 20L or less
3. Adjustable shoulder strap: hook and loop fastener design on both sides of the shoulder strap
4. Waist seal design: additional bags can be added to the outside of the waist seal and provide ventilation
5. Triple bag design: metal buckle quick-hanging system on the back of the triple bag, easy to disassemble when not needed
