Mother Nature doesn't much care that you've stashed your laptop, lunch, and copy of Lolita inside your pack she wants to rain, damn it, so she's gonna rain. The best you can do is stash your weather sensitive gear inside the Chrome Bravo Laptop Backpack and let the waterproof 1000D Cordura do its best to keep your gear snug and dry. In case Cordura isn't enough, Chrome lined the Bravo with 1800D truck tarpaulin for extra waterproofing and durability, so you could practically drag it behind you or take it for a swim with no ill effects. The laptop sleeve secures computers up to 15in, and the large back pocket is a perfect place to stash a rain shell or extra layer. Chrome also designed the Bravo to expand to accommodate 40L just loosen the compression straps and tossed in a padded back panel, sternum strap, and a classic Chrome seatbelt style quick release buckle so everyone can tell at a glance that you take your commuting seriously.