This seemingly minor but innovative bag just made your roll-top backpacks and waterproof messenger bags obsolete. Seal Line’s waterproof laptop sleeve guarantees that the only thing you really can’t get wet during your commute will stay dry. It might be nice to have the roll-top if you live in Seattle, but for most people those waterproof bags are total overkill for day-to-day life. Now you can get a little insurance for your laptop and not deal with the hassle and extra weight of those waterproof backpacks.