In cold climates, the buckle design allows you to open and close the switch more easily even when you are wearing gloves. Front flip-up top cover design, opening and closing are fixed with two G-HOOKs; the main bag and the front compartment can be used separately for dry and wet use; the front compartment can also store frequently accessed items (such as backpacks, mobile food) ; The top cover of the backpack can fix the rope; if you want to make the backpack lighter, the equipment fixing rings, compression webbing, and composite frame on the backpack can all be removed as needed.