A/C Bib Short - Men's
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Quantity
Stay cool and comfortable on blazing summer rides with lightweight, breathable bibshorts
What Our Gearhead® Experts Are Saying:
"I wore the A/C Bibshort on a hot, humid ride, and its breathability was unmatched. The mesh panels kept the airflow constant, and the Progetto X2 chamois offered all-day comfort even on rough roads. It’s my go-to for summer training rides!"
When summer temperatures soar, we reach for the Castelli A/C Bibshort to keep our cool on demanding rides. Designed with closed-knit mesh panels and a Progetto X2 Air Seamless chamois, this bibshort delivers premium breathability and comfort, ensuring we can push the pace without overheating.
Every detail, from the minimalist mesh straps to the silicone leg grippers, is engineered to stay in place, move with us, and provide lightweight support during long hours in the saddle. Whether tackling hill repeats or enjoying a leisurely ride, this bibshort offers a cool, chafe-free experience under the sun.
Details
- Summer cycling bibshort for hot and humid rides
- Closed-knit mesh panels maximize airflow and breathability
- Progetto X2 Air Seamless chamois pad ensures all-day comfort
- UPF 50+ rating protects skin from harmful sun exposure
- Lightweight and tailored design supports an aerodynamic fit
- Silicone leg grippers keep bibshort securely in place
- Item #CSTZ7WL
- Season
- summer
- Fit
- form-fitting
- Chamois
- Progetto X2 Air
- Bib
- mesh
- Leg Gripper
- silicon
- UPF Rating
- 50+
- Claimed Weight
- 7.2oz (203g)
- Activity
- cycling
- Manufacturer Warranty
- limited 2 years
Reviews
Q&A
What do you think about this product?
Overall Rating
3.5 based on 3 ratings
Review Summary
Fits Small
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.View
Selecting an option will reload the available reviews on the pageJuly 14, 2025
They work for the heat but looks ?
- Familiarity:
- I've used it several times
I live in Florida so I test "summer" riding gear all year. These do work for the heat quite simply because the panels on the sides of your quads are a "mesh" type material. Not enough that you look indecent or like a weirdo, but your skin tone does slightly show through. I guess depending on your skin tone it is more apparent and visible on lighter skin riders. Regardless, they do work even if just in your mind because they do feel breathable due to their mesh type construction. I purchased one color and coming back for the other as I am pretty pleased with their performance.
Originally reviewed on Competitivecyclist.com
July 7, 2025
Cooler in hot humid weather
- Familiarity:
- I've used it once or twice and have initial impressions
I wanted a pair of bib shorts for a hot humid ride. These were the only ones I could really find. The fit was a little weird, but all in all I’d say it works. I wasn’t as hot as I am in my regular bib shorts.The top of the shorts is a little lower and the leg length is a little shorter than my other bib shorts. The chamois was excellent. My only complaint is the shoulder straps. They don’t exactly disappear while you’re riding. One star off for that.
Originally reviewed on Competitivecyclist.com
June 8, 2025
Length won't stay; rides up
- Familiarity:
- I've put it through the wringer
First off, typical Castelli sizing: needed a L (where normally would wear M). Issue I have with them is that the legs won't stay pulled down; thighs ride up in no time. Seems like it has a good thigh grip... so I believe the problem is with the meshy material along the side; it wants to "bunch up". Otherwise good bib shorts. Castelli needs to make these longer though. Can't recommend as they are; won't buy this version again.
Originally reviewed on Competitivecyclist.com
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