Cargo Fly Roll Top Internal Dry BagsThe Alpacka Cargo Fly Internal Roll Top Dry Bags feature a stripped down and lightweight classic roll top design. Both versions clip into place along the sides of the packraft with a quick release buckle. We recommend the Roll Top Dry Bags for most packrafting trips and Zippered Dry Bags for additional durability and river systems with multi chamber permitting requirements. For extended river trips like the Grand Canyon and Middle Fork of the Salmon,