Our backpacks have encountered exactly zero bombs in our time, but being aware your bag is bombproof lets you know it will hold up to the rigors of the day. Chrome just released their Knurled Welded Waterproof Rolltop collection that, not only happen to be bombproof, but 100% waterproof and light in the process. Each features a watertight rolltop closure so your gear is even protected if you drop the bag in a lake or something while camping. Toss one on the back of your bike for your next commute and know that whatever you store in it will arrive in better condition than you.