Rain happens. So do unanticipated dunkings. If you hike in a rainforest or chase rivers to their source, the waterproof qualities of Watershed packs can help keep your lunch and activewear drier than most conventional backpack designs. Most Watershed backpacks are watertight on all sides, so you have a few moments to swim for shore before your entire interior contents soak through. If backpack rain covers are not enough, Watershed packs like the Westwater and Big Creek are the perfect amphibious companions in the backcountry or up the Nile.