Patagonia Guidewater Sling 15L Lightweight, fully submersible sling pack can be worn over the left or right shoulder. Redesigned with improved materials and a much wider opening water proof zipper. 1 lbs 7.6 oz oz 11" x 8.5" x 18" 15L (915 cu in) style # 49145 Patagonia Guidewater Sling Features: Hard-Working, Durable Fabric - Made from sturdy 100% recycled nylon fabric and webbing and 100% recycled polyester back panel and lining IPX-7 Rated Bag - Fully waterproof submersible IPX-7 rated bag for keeping contents safe even in full immersion Panel and Strap Do Not Absorb Water - Hydrophobic back panel and shoulder strap do not absorb or retain water Integrated Net Scabbard - Net scabbard is integrated into the back panel for easy, out-of-the-way stowage Easy Access - Zipper allows the sling to be easily accessed with either hand, and adjustable internal organization can be customized to your preference, making the pack equally capable whether worn over the right or left shoulder Internal Organizer Pocket - Internal organizer pocket separates small items from main compartment contents and can be transferred to external lash points when quick access is critical