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Insider 2 Bib Short - Men's

5 out of 5 stars
1 Review


Size Chart


Why We Like The Castelli Insider 2 Bib Short

Castelli's Insider 2 Bib Shorts are here to help keep you cool and comfortable while you hit the trainer to build your base for next spring. It features raw-cut leg endings to keep the leg from moving, bib straps with monofilament open knit for optimal breathability, and a Progetto X2 Air Skin care layer pad for optimal comfort.


  • Lightweight bib short designed for indoor training
  • Lycra construction with mesh side panels
  • Progetto X2 Air Skin pad provides optimal seated comfort
  • Raw-cut leg endings keep shorts in place
  • Bib straps designed for optimal breathability
  • Item #CSTZ7N5
[main body] Lycra
spring, summer, fall
Progetto X2 Air Skin care layer pad
minimalist bib straps with monofilament open knit
Leg Gripper
raw-cut leg endings
Claimed Weight
[medium] 132g
Manufacturer Warranty
1 year
road cycling, indoor cycling

Overall Rating

5 based on 1 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
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4 Stars - 0 reviews
5 Stars - 1 reviews

Fits True To Size

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Runs smallTrue to sizeRuns large

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5 out of 5 stars

November 24, 2023

Comfy, not too revealing, breathable

I've put it through the wringer

6'2", 33" waist, 42" chest, 168-180 pounds, and size guide recommends a Large. I went with XL and wouldn't go smaller without trying them on first- may be fine but the straps on previous bibs are a bit short for me so I erred larger rather than have them snug in the crotch. The chamois is comfortable but I did have an issue with a seam rubbing on my glute the first ride or two, no problems since and they have held up well. I wouldn't wear them in public, not even in the house in front of my adult children, but I am a bit more modest than average perhaps.

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Originally reviewed on