The Osprey Sojourn Porter 46 is a true traveler's workhorse that maximizes storage space and comfort for carry-on convenience. Internal StraightJacket straps securely compress belongings, and an AirScape™ backpanel keeps you cool and dry as you move through your journey. Attach your bag to wheeled luggage with an add-a-bag strap. Compatible with Daylite™and Farpoint™/Fairview™ daypacks. Made from durable fabric, you can count on the longevity of this pack for years to come. Osprey Sojourn Porter 46 Litre Travel Backpack