Castelli revamped its revolutionary Free Aero Race Shorts for 2015, making them even more breathable, aerodynamic, and supportive than the previous model and introducing a bib free option for riders who prefer traditional shorts. The Free Aeros are made from a blend of fabrics designed for durability and cool breathability, with 30% Lycra for a perfect balance between supportive compression and unrestricted movement. The sides and back also have surface dimpling kind of like a golf ball meant to cut through the wind and get you down the road faster. To complete the fit, Castelli's Giro Air leg bands feature a thin, almost mesh like gripping surface to keep everything in place and eliminate any uncomfortable bunching or pinching just remember to throw on some sunscreen under the leg bands to avoid getting burnt. At the core of these shorts is the Progetto X2 Air Seat Pad, an antimicrobial chamois with seamless construction, four way stretch, and a perforated foam layer for a soft, ventilated, friction free ride. The Free Aero Race Shorts also include reflective elements to help keep you visible in low light conditions for a race ready short that will get you quickly and comfortably through any summer ride.