Simms Dry Creek Roll-top BackpackWaterproof Pack for Full Days on the Water The Simms Dry Creek Roll top Backpack is built for anglers who need their gear to stay dry no matter what. Whether you're hiking into a backcountry stream above Glenwood Springs, floating a raft section of the Colorado River, or wading through deep runs on the Roaring Fork, the Dry Creek's waterproof 300D ripstop construction keeps everything inside protected. The roll top closure seals out water completely,