Known for its lightweight, breathable construction, the Castelli Competizione Bib Short is our pick for a high-performance summer bib short that is ready for any ride. The inner leg features Affinity Pro Lycra fabric for better stretch and rebound, while Vortex BLC textured fabric offers ideal aerodynamics. GIRO4 leg grippers with silicone strips ensure our shorts stay put while pushing the pedals to the max, while the KISS Air2 seat pad keeps us comfortable, no matter how far we ride.