We love working with our friends and were lucky to partner with Giro on a bag experiment. The design needed to resemble a classic cycling musette or "feed bag", but with some much needed improvements. For one, we added a sternum strap to keep the bag from sliding off your back and a top flap to keep moisture out. Then we used a proprietary Giro cotton fabric that is water-resistant, breathable and very lightweight. This allows the bag to be folded down and packed away with ease.