Osprey Transporter Duffel 40 Backpack, Blue-Black The carry-on size Transporter Duffel 40 is rugged yet lightweight, with a remarkably durable exterior made from highly water-resistant NanoTough™ material, which incorporates 100% recycled high-tenacity nylon. With durable hardware and ergonomic handles, this duffel is comfortable to carry and features a padded, retractable harness. It is backed, as always, by our All Mighty Guarantee™. Features: Large, secure U-shaped access to the main compartment Weather-protected zipper path with overlapping rain flap End zipper pocket for quick access to small items Internal zippered mesh pocket Four sturdy webbing handles Eight webbing attachment points to secure the duffel