Give your legs a gift. Castelli’s Free Aero Race Bibshorts employ three different fabrics to keep you cool, comfortable, and fast. The Energia Micro side and back paneling allows full range of motion, the Breathe Micro fabric in the front encourages maximal airflow, and the Action Micro fabric in the chamois area provides comfort and durability. Their comfy Progetto X2 Air chamois has just the right balance of long-lasting support, ease of motion, and additional airflow, while their Free Bib design minimizes the bib uppers, allowing for an open chest. These airy bibs also sport Castelli's GIRO3 leg grippers and seam-free inner legs for a comfy, secure fit.