The Osprey Sojourn Porter 46 Backpack in Black is a true traveler's workhorse that maximizes storage space and comfort for carry-on convenience. The internal straight jacket 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. It is compatible with Daylite, Farpoint, and Fairview daypacks. It is made from durable fabric, so you can count on the longevity of this pack for years to come. The backpack is heavy-duty bluesign approved, and a TSID luggage registration is included with each piece.