This is a Montbell Chachapack 45 backpack, color Gunmetal. I purchased it about 10 years ago and used it for domestic travel about once a year. I haven't used it for mountain climbing, so there are no noticeable stains or tears. Also, there is no stickiness or unpleasant odor due to hydrolysis. The pockets on both sides can be stored inside the backpack when not in use. This is a used item, so please refrain from purchasing if you are concerned about minor details.