Rains Mini Backpack for $95: This gorgeous, Scandinavian-inspired backpack is waterproof, fits a 13-inch laptop, and comes in at under $100. Photograph: Adrienne SoAway Commuter Backpack for $228: We very much like everything Away makes, from carry-on luggage to toiletry bags. This bag is attractive, water-resistant, and full of organized pockets; the hardware also feels premium. Able Carry Daily Backpack for $139: This pack is thin, so you can stuff it to the brim before it starts to get bulky. There are standard and small sizes, so check the website measurements if you’re not sure if it'll fit your bag.