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Castelli Free Aero Race 4 Bib Shorts (Kit Version)


Size Guide

Castelli Men's Clothing Size Guide
  S M L XL 2XL 3XL
Chest (cm) 92 96 100 105 110 115
Waist (cm) 80 84 88 93 98 103
Hips (cm) 94 98 102 107 112 117
Inseam (cm) 82 83 84 85 86 87


Castelli Shoe Cover Size Guide
  S M L XL 2XL
Men's/Women's EU Size 39-40 41-42 43-44 45-46 47-48


Castelli Men's Socks Size Guide
  S/M L/XL 2XL
Men's Shoe Size (EU) 35-39 40-43 44/47


Castelli Gloves Size Guide
Men/Women <17cm 17-20cm 20-23cm 23-25cm 25-27cm >27cm


Our No-Compromise Approach To Creating The Best Cycling Clothing In The World Is Nowhere More Evident Than In The 2019 Free Aero Race 4 Bibshort. This Is A Product That’S Undergone 12 Years Of Development And Refinement, With Literally Millions Of Kilometers On The Road.

The Free Aero Race Short Is The All-Around Race Short We Supply To Team Sky, As Well As All Race Teams We’Ve Sponsored Since 2007. But That’S Not Enough Of A Reason For You To Just Go Out And Buy A Pair. Since These Guys Ride Over 30,000 Kilometers Per Year, We Consider Them Ideal Testers And Continuously Solicit Their Feedback. The Difference Is That We Actually Listen To Them. And The Good Thing For You Is That The Pros Are Looking For Comfortable Shorts Too, So This Short Is Made To Be Minimalist And Fast, But Without Sacrificing All-Day Comfort.

For This Year We’Ve Made Subtle But Important Refinements. The Seat Pad Has Been Updated With A Softer, Stretchier And Totally Seamless Top Layer. The Leg Gripper Is Also Stretchier And Grips Better Yet Allows For A Better-Quality Sublimation Print. The Bib Straps Are Both Lighter And More Comfortable While Giving Better Support.


  • Vortex Dimpled Fabric On Legs For Aero Performance
  • Forza Fabric On Inner Legs With 38% Lycra® Content For Perfect Fit
  • Stripe Mesh Engineered Minimalist Bib Construction Keeps You Cool
  • Giro4 Leg Gripper Elastic For Better Grip Distributed Over Larger Area
  • Doppio V Construction In Front For Increased Support And Comfort
  • Flat-Lock Stitching
  • Progetto X² Air Seamless Seat Pad

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