Can't go wrong with Chrome, B U T check out Bailey Works before you make a final decision. My XXL Super Pro is 3,080 cu. in., waterproof, and has a useful number of pockets, etc. They also make assorted waterproof backpacks but I haven't tried them. Main thing is my bag carries a lot of weight comfortably IMHO. I like the extra room for groceries, whatever I want. Daily commute stuff fits easily: clothes, shoes, lunch pail, 1L filled bottle, lock, repair stuff, phone, small amt. equipment I use at work. Like Chrome, these bags are extremely well made, and I prefer the fastener over the metal buckle.