Castelli Premio Bib Shorts

Item: 11-4610
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Exceptionally comfortable and fast-wicking for your longest rides, the Castelli Premio Bib Shorts nearly disappear when you put them on, so you can log those lengthy hours on the road without thinking about your clothing. Lightweight Forza fabric is extremely stretchy, manages moisture and delivers optimal muscle compression. 3D mesh upper back and lumbar support band put ventilation right where you need it. Bonded, ergonomic bib straps are completely seamless for more comfort and two seams in the body of the shorts are strategically placed for less chafing and pulling. New and improved Progetto X2 Air chamois provides the ideal blend of support, ventilation and fast-drying performance for comfort on training and endurance rides. Raw-edge leg endings with vertical silicone grippers are sleek, supportive and stay in position, no matter how long or hard you hammer.


  • Forza fabric with 38% Lycra content for moisture-wicking, compression and a perfect fit
  • 3D mesh upper back panel for comfort and breathability
  • Bonded, flat, ergonomic bib straps for extra comfort
  • 3D mesh lumbar support band for breathable stability
  • 8-panel design uses the right amount of compression to reduce muscle fatigue and speed up muscle recovery
  • Embossed Castelli shadow workmark
  • Progetto X2 Air chamois:
    • 4-way stretch, microdenier, seamless, bacteriostatic layer adapts to the shape of the body and saddle without any folds in the fabric
    • Air flows right into the surface fabric to aid evaporation
    • Multi-density foam with infinitely variable thickness
    • Engineered thickness is placed where it's needed most for maximum comfort
    • Perforated viscous padding is added under the highly sensitive ischial and perineum pressure areas
    • Long legs for improved airflow around the legs
  • Reduced seaming eliminates chafing for comfort
  • Raw-edge leg endings with vertical silicone grippers provide gentle compression, improve aerodynamics and stay in position
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