Castelli Nano Flex Pro 2 Omloop

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"This is the piece designed for racing in the cold and/or wet. The new Nano Flex Xtra Dry fabric keeps out more water than ever and is warmer than ever thanks to the new double-face tightly knit construction. We've minimized seams for comfort and to keep water out, and used a raw edge at the bottom of the leg, cut just above the knee to add a bit of extra warmth.

While this short is our best short for wet conditions, it's also a great choice for dry and cold if you want to pair it with a knee or leg warmer."

  • Nano Flex Xtra Dry fabric brings higher level of water protection and warmth
  • Double-face knit keeps you warmer because less wind comes in
  • Long leg reaches to just above the knee
  • Raw-cut edge at knee for comfort
  • Fewer seams to reduce chance of water coming in
  • Lie-flat bib construction
  • Progetto X2 Air Seamless pad for long hours in the saddle
  • Reflective screen-printed Castelli graphic on both legs
  • Temperature Range: 12°-20°C / 54°-68°F

Colour: Black


Size Guide

In Stock - Usually dispatched within 24 hours


Castelli have a typically snug "Euro"-style race-ready fit.

If you're between two sizes, or you prefer a more relaxed fit, we recommend you go up a size.

Please use the table below as an indication of actual fit and don't be concerned if it suggests a larger size than you usually take in other brands.

How to Measure:

  • Chest: Measure under your arms, around the fullest part of your chest.
  • Waist: Measure around your natural waistline, keeping the tape slightly loose.
Chest A 92cm 96cm 100cm 105cm 110cm 115cm
Waist B 80cm 84cm 88cm 93cm 98cm 103cm
Hips C 94cm 98cm 102cm 107cm 112cm 117cm
Inseam D 82cm 83cm 84cm 85cm 86cm 87cm