About Frost River Backpacks & Daypacks Frost River's backpacks and daypacks are made from Frost River's 18oz waxed canvas, leather straps and brass hardware in Duluth, Minnesota, and are made to last. Multiple capacities are tailored to various durations of trips, configurations of pockets, pouches and storage areas keep you organized and your gear at the ready. Looking for a pack you'll use your whole life, and then hand down to your kids? Looks no further than Frost River's backpacks and daypacks.