Completely airtight zipper, no need to worry about water in the bag.There are quick access storage bags on the left and right.There are two shoulder straps on the back, which have a zero weight bearing feeling, and a chest strap with a slide rail is integrated. The lower part is an auxiliary load-reducing belt. The lifeblood of a backpack is its backpack system, which has a powerful backpack system that can bring extraordinary load reduction effects to users. This backpack carrying can be called the whole field. It's very comfortable to carry.The buckle of the belt has a velcro storage system on both sides. Avoid loose straps during riding that are not easy to fly around.Both shoulder straps have quick hanging points , which can be used to hang walkie-talkies, water bottles, soft water bag nozzles, and so on. A bit of the essence of a mountaineering bag.It's the essence of a hiking backpack.