The SealLine Kodiak Tapered Dry Bags are lightweight bags that are made with tough low-friction nylon and radio-frequency welded seams. Plus, they are shaped to slide easily into tight spaces. They have a Dry Seal roll-down closure and D-ring attachment. Kodiak Tapers are shaped to fit sea kayak bulkhead compartments for the most efficient use of space: Taper 35 in stern, 20 in bow. To ease stuffing, excess air can be squeezed out of a purge valve at the bottom of the bag.