Best for: Lightweight with reflective detailing to give better visibility. For hitting the pavement or the trail.. . The features: Soft, lightweight and breathable with reflective detailing for better visibility. With a quarter zip for dumping heat and a collar.. . Our fabric: Light as air and naturally cool, our Air fabric is a nature-based, breathable blend of bamboo viscose and organic cotton with just the right amount of stretch.. .. Storm Navy. 68% Bamboo Viscose, 28% Organic Cotton, 4% Elastane. Quarter zip. Reflective detailing. Easy care - wash at 30°