The material used is of good quality, though not water proof. Enough main zippers (5 nos) provided for all storage requirements (4 of them can be locked using a TSA lock (not provided, provision available),your gadgets and electronic gear is safe when you leave your backpack away for a while, atleast these locks are a deterrent, unlike most of the backpacks which cannot be locked, It can also accommodate a 17 inch or a lillle bigger size laptop very comfortably. My 15.6 inch Asus Strix Gaming laptop sits very comfortably in this backpack.The inner layers have an orange material which is quite good and any material on it will be clearly visible. It is quite comfortable on your back and shoulders. I was able to very comfortably stack 7 shirts ,7 sets of inner garments 3pants, night wear, one bed sheet, one towel using packing cubes. There is still little space left. You can carry enough gadgets like a Sony A6400 body, cables, a tablet, 2 or 3 mobile phones in one compartment. After having seen more than 100s of backpacks and ordering a few , I can boldly come to the conclusion that this is one of the best. Pricing of 5k is on the higher side. Only con, it could also be the killer blow for this backpack, is the highly feeble hook in the shoulder straps, it feels it could snap any time, only time will prove this.