Questions? Call our tri Specialists! 1-800-445-4790
Click to zoom

Men's Nano Flex Pro Omloop Bib Shorts

Save 5% more when you purchase 2 or more Closeout items
Out of Stock
Ships Free!
Please Confirm Size
Qualifies for Free Shipping!

Pro Level Style and Support.

The Men’s Nano Flex Pro Omloop Bib Shorts from Castelli offer pro-level style and support with their extended knee hem. Although it’s only a few centimeters longer, the additional length delivers noticeable benefits in terms of warmth and, of course, style. On the front side, the hem reaches down nearly to the top of the knee cap. Around the backside, the hem curves upwards to prevent bunching. Made primarily from Nano Flex, a flexible, fleece-based fabric with a hydrophilic finish, these bibs are largely waterproof in light rainy conditions, forcing droplets to remain at the surface where they evaporate or bounce off. In steady rain, water eventually seeps through but the insulating properties of Nano Flex maintain warmth so you may get wet but not cold.

For sustained comfort in the saddle, these bib tights come with Castelli’s Progetto X2 Air seat pad. The top layer is seamless with an anti-microbial treatment and four-way stretch. It's breathable, as well, to regulate temperature and moisture. The sensitive ischial and perineal zones feature perforated viscous padding to ensure adequate support. Multi-density foam throughout the rest of the chamois ensures comprehensive support.


  • Water-repellant & insulating Nano Flex.
  • Progetto X2 Air seat pad.
  • Pro-length hem.
  • Raw-cut hem without silicone/elastic for maximum comfort.
  • Tapered hem prevents behind-knee bunching.

Progetto X2 Air Details:

  • Seamless, air flow top layer.
  • Four-way stretch
  • Bacteriostatic treatment.
  • Multi-density foam of variable thickness.
  • Perforated viscous padding at ischial & perineal zones.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.

Style Type: with Bib 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Omloop bibs are awesome!
by RAP49
Cycling Enthusiast
Salt Lake City
0 of 1 customers found this review helpful.

This is my second pair of Omloop bib shorts. At 6'1 I enjoy the coverage provided by the longer leg. I often reach for these instead of my knickers and they never fail to do the job, particularly down to about 55 degrees. Below, that I match them with knee warmers and I'm good down to about 40-45 degrees. Great product!

Reviewed 12/13/2018
Was this review useful to you? Yes/No
Thank you for your feedback.
So good
by Sono mio
1 of 1 customers found this review helpful.

Excellent thermal bibs. The right length and fit, great pad and placement of pad. Water beads in light rain or wheel spray. Pairs well with knee or leg warmers and a Grenache.

Reviewed 6/18/2018
Was this review useful to you? Yes/No
Thank you for your feedback.
Love 'Em
by CornHolyO
Cycling Enthusiast
1 of 1 customers found this review helpful.

They work exactly as described. Great on cool, damp rides, but not as restrictive as knickers or tights. If it starts to warm up, you're still comfortable and don't get too hot. Great chamois and fit, just size up one size as they are the typical Castelli fit.

Reviewed 12/1/2017
Was this review useful to you? Yes/No
Thank you for your feedback.