To pay homage to all of the riders who wore yellow this year, however briefly, we teamed up with Castelli to create the Leader Free Aero Bib Shorts. The Free Aero bibs were the platform for the design of these shorts, and Castelli's obsession with details shows itself in the features. With the shorts' compressive Breathe Micro fabric front panels, you'll feel moisture pulled away quickly from your skin and muscle vibrations kept at a minimum to limit fatigue and make sure your legs stay fresh. On the back and front panels of the shorts, Energia Micro fabric stretches while holding its shape, ensuring you don't feel restricted while pedaling. The wear prone saddle contact area receives durable Action Micro Fabric that withstands friction while still feeling soft against your skin. By eliminating any seaming on the inner thigh, Castelli hopes to limit irritation in the area, showing their attention to the small features that make you want to grab one pair of bib shorts over another.The Progetto X2 chamois' combination of comfort with breathability makes it easy to see why it's been a winning top tier design for Castelli. Features like four way stretch, a bacteriostatic layer, two layer perforated padding, and the complete absence of seaming or folds in the fabric show just how much Castelli doesn't want discomfort to cut your ride short. A wider bib construction features an accommodating Free fit and light mesh straps, and Giro3 leg grippers keep the shorts in place without stickiness or squeezing.