I recently purchased the Cai 7331 Large Travel Backpack and was impressed by the durability, function, and style of the bag. The straps are a good size, well padded, and sit comfortable on my shoulders. The zippers don't jam and glide easy. There is even a strap on the back to attach the bag onto luggage. I highly recommend this backpack for anyone looking for something that provides utility and is fashionable.