4519003-010 | BLACK

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Team Ineos Official PartnerROSSO CORSAPROGETTO X2 AIR
Based on 8 reviews

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Best bib shorts ever

I had tried many different bib shorts from many manufacturers until I tried Castelli’s Free Aero Race. Version 4 is better than ever and is sublime to wear for short or long rides. I’m big guy at 6’5” & 240 lbs and wear an XXL in all of my clothing but need to size up to 3XL for Castelli bibs. For a tall rider, the bib straps fit well and the legs are plenty long. A+ to Castelli! Submitted on  29 December 2020  by  KenB

My favourite short

Pricey pants but well worth the price. nice design. Normally wear size L but for castelli clothing I need XXL. if it needs to be replaced I already know which pants it will be. This one!. Submitted on  19 October 2020  by  Eric


I wanted to take the time to write a review to shed some light on sizing. As others have suggested (here and in other forums), it's best to order at least a size larger than normal. It's always hard when ordering online, and I was going back and forth between ordering an L or XL. I am 6'1" (185 cm), ~170 lbs., with a 33.5" (85 cm) inseam. My typical t-shirt size is M and pants are usually a 30" waist. I ordered an XL and I'm glad that I did. The XL is snug, so the L would have been too small for sure. These seem very well made (in line with Castelli's reputation) and ready for a long day in the saddle. The leg is a bit long, reaching just above the knee, so if you like a short, short leg, you should perhaps consider something else. Overall, I would certainly buy this product again. Submitted on  11 June 2020  by  Reid

Worth every penny! Epitome of comfort!

Got these yesterday and rode 20 miles in them today. They run a size small so order up one size. I wear a large in other brands (5' 11" / 190 lbs) and the XL is perfect. The Progretto chamois pad is sublime... no chafing, no soreness, no unwanted repositioning... I felt as fresh after 20 miles and I did when I started. My only complaint (and it's a small one) is I wish the shoulder straps were wider. The straps are fine, and I never thought about them while riding, but a wider strap would be more comfortable for longer rides. I will be ordering another set soon. Submitted on  01 June 2020  by  Bill B

Best bibshorts period

I've owned several versions of this short and they have all been fantastic. They are my go to for summer riding and I will continue to buy them as long as Castelli makes them. Submitted on  03 January 2020  by  Dan M.

Unrivaled Quality

This is by far the best bib short I have ever had the pleasure to wear. I had previously used Pactimo, but often had issues with the grippers slipping. I have had ZERO issues with the Free Aero Race 4 Bibshort slipping down my leg. The pad is incredibly high quality with multiple layers for different pressure points on your body. The seams are well done; and the aero dimples make me feel fast. I am a Castelli fan for life now! Submitted on  03 June 2019  by  Travis

Excellent cuissard

L'ajustement est parfait et le maintien musculaire également. La peau Progetto est très confortable et ne provoque aucune irritation. Un sans faute. Submitted on  02 June 2019  by  Guillaume

Great Improvement

This is one product, if I'm being completely honest, wasn't one I was particularly excited about. The former version of the short was great, so while I was interested in how it could be improved upon, it wasn't something I believed would provide an answer to a question I wasn't asking. Long story short, the improvements to these shorts are huge - from improved straps, a better gripper, and the most comfortable seat pad of any I've ever tried - and I would highly recommend to anyone in the market for premium bibshorts. Submitted on  27 May 2019  by  Steve C, Portland, OR, Castelli staff


Important Notice

Following the new measures issued by the Italian Government to prevent
the spread of the COVID-19, we need to inform you that our company
will be closed from March 23 to April 3 (inclusive).
All orders placed during this period will be dispatched from April 6.
Due the evolving situation, we invite you to visit the website for further updates.

We thank you for your comprehension during this difficult time and
we would like to take this opportunity to wish you and your loved ones all the best.


Product features
  • 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
  • 15°-35°C / 59°-95°F
  • Weight:172g
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