The Widemouth Carry on by Hummingbird is designed to travel. It’s a rugged ,40 liter, waterproof, carry on bag that’s designed to fit into carry on compartments, or wherever else you’re brave enough to stuff it. About the Carry on The bag weighs 1 lbs 12 oz, and carries a full 40 liters of gear … More Hummingbird Widemouth Carry-on review