The Castelli Free Aero RC Men's Bibknicks are Castelli's top-of-the-line race shorts designed for extreme comfort on and off the track. Castelli has spent the last 15 years working hard designing the Free Aero Race Shorts so they do everything well. Starting with their best pad, the Progetto X2 Air seamless seat pad, the Free Aero offers two densities of foam and gel pads to provide progressive damping, with a top Skin Care layer that is soft and stretchy to move with your skin for friction-free cushioning where you need it. Building off of this, the short portion of these bibknicks have reduced seams and panels (only 5!) for reduced friction and Forza 2 fabric for exceptional muscle support and compression. The bibs for the Free Aero are the most minimal you've seen, with open-weave straps, a reinforced yoke, and minimal mesh back to keep the air flowing but still comfortably keep them in place. Finish this off with Castelli's most comfortable leg end ever, having gone through rigorous testing so that they stay in place without any sort of gripper or elastic, and reflective piping for safety, and you really do have Castelli's best ever race shorts. If you're after serious comfort and performance, look no further than the Castelli Free Aero RC Men's Bibknicks.