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Climber's 4.0 Jersey - Men's

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Color:Belgian Blue/Silver Gray


Size Chart


Why We Like The Castelli Climber's 4.0 Jersey

Built for speed on the summer’s toastiest days, the Castelli Climber's 4.0 Jersey provides us with the airflow and rapid cooling we need to ride at our best through the summer heat. This jersey combines the CFD-based seam construction we know from the Aero Race 7 Jersey with aerodynamic 3D mesh fabrics to keep us cool without sacrificing speed. Though form-fitting, the Flusso 3D and StradaPro 3D fabrics are stretchy and soft, allowing the jersey to move with us as we move in and out of the saddle. 


  • Summer jersey built for the hottest, fastest races and training sessions
  • Engineered for rapid cooling and aerodynamic efficiency
  • Aerodynamic front-facing fabric and breathable rear fabric keep us fast
  • Blocks 90% of UV rays on the back for optimal sun protection
  • Complete with CFD-based fabric placement and seam construction
  • Elastic at the waist keeps the jersey from riding up
  • Three rear pockets store our ride essentials with ease
  • Item #CSTZ7SX
Responsible Collection
bluesign® APPROVED
[front] Flusso 3D, [rear] StradaPro 3D
full-length YKK Vislon
spring, summer
three rear
Manufacturer Warranty
limited 2 year
road cycling

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