Osprey Backpacks - Osprey Ultralight Stuff Packable Backpack - Shadow Grey :: Men > Backpacks. Packs down into a small carry pocket which can be easily transported when not in use Zipped stash pocket Zipped panel access Internal security pocket for valuables Crafted from durable 40D nylon ripstop Water-resistant outer shell Stretch mesh side pocket for water bottle Reflective graphics ensure you are seen in low light Deluxe Airmesh harness Volume: 18 L Osprey backpack Weight: 90g Material: 100% Polyester