The Sail Messenger bag can be unfolded into a tote bag when you need additional capacity. It has an interior compartment for your laptop and an large exterior pocket. It is ultralight, water-resistant, and durable; made from a combination of kitesurf, and boat sails.
Designed in collaboration with the Institute of Design as Stanford, this lightweight messenger bag was developed as a light multi-purpose cycling bag. It's so versatile it could take you from a bike ride, to the office, and finally to the mountains for a quick hike.