Osprey Transporter Hardside Hybrid 36L, lightweight and weatherproof backpack built for durability. This pack consists of a bottom/backside hardside shell combined with a tough TPU-coated fabric front that allows for an additional 5 liters of cargo expansion. This hybrid design offers durability and protection in a lightweight package at just 6.5lbs / 3kg with the versatility that will allow you to pack a few extra souvenirs with you. The 4-Wheel Hybrid is a globally accepted carry-on size and is sized to fit most major airlines’ overhead bin requirements: 21.5h x 14w x 9d in. / 55h x 35w x 23d cm.