Description of Osprey Porter 90 Adventure Travel Available in three sizes, the Porter Series provides basic gear hauling ability in a stylish, organized backpackable package. Porter travel packs are Osprey Excessory compatible with D-rings for easy attachment. You can wear your Porter like a pack, using the easy-stow harness and fabric wing hipbelt or outfit it with our optional shoulder strap for over-the-shoulder carry. Get your gear and go with the Osprey Porter 90. Features: Internal organization Multiple Carry Options 5500 cu. in. (90 liters), 3lb 14oz (1.76kg)