The Castelli Endurance Bib Shorts are built for epic base rides. Primarily composed of abrasion resistant Action Micro fabric with side inserts of stretchy Energia Micro, these bib shorts are über-durable and allow for freedom of movement. The Prosecco treatment is hydrophilic, so water droplets spread out over the fabric and evaporate quickly to keep you dry. The Progetto X² chamois features viscous inserts under sit bones and perineum to provide all-day comfort, and single-layer Giro++ leg grippers stay put without constricting.

• Durable Action Micro Fabric treated with hydrophilic Prosecco
• Non-chafing Flat-lock stitching
• Giro++ single layer leg gripper
• Reflective inserts on back of each leg
• Varied-density Progetto X² chamois