Harken Sport Rogue Waterproof Backpack, Black/Carbon
Harken redefines the backpack. The TPU-impregnated nylon is waterproof, abrasion and stain resistant, and UV-resistant. The roll-top closure provides a waterproof seal, and the air-purge valve allows easy compression. You've got two exterior pockets for water bottles, an elastic cord for your jacket, and padded back and shoulder straps for comfort. So much for roughing it.