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Castelli Nano Flex Pro 2 Bib Tight - Men's


Nano Flex Pro 2 Bib Tight

Busy lives often don't let us ride as much as we'd like. When the seasons change and storm clouds frequently linger on the horizon, there's no need to let your training suffer. The Nano Flex Pro 2 Bib Tight offers substantial water protection and warmth without sacrificing mobility or breathability, making them ideal for all kinds of cooler weather and not just rainy days.

The new Nano Flex Xtra Dry main fabric has a tighter-knit construction and a more effective water repellency treatment, improving warmth and water-resistance compared to prior generations of the Nano Flex tight. Castelli also reduced the number of seams, decreasing the chance of water seeping in. For protection against wet roads, Castelli uses waterproof splash guards on the lower legs, a material that is also reflective to enhance visibility to other road users in low light. A double layer of fabric over the backside further protects from road spray. Because there is no membrane, these tights are breathable and wick-moisture during more intense intervals, keeping you dry from perspiration in addition to the rain. They are also stretchy as to not hamper movement, unlike cumbersome heavy-duty rain pants, making them a go-to training tight for any colder days.

This is a serious training tight so Castelli includes their finest insert, the Progetto X2 Air. A soft and stretchy next-to-skin layer keeps you comfortable during movement, with ventilation to aid in moisture evaporation. Multi-density foam cushions your sit bones and perineum for long-ride comfort, without being too bulky in other areas.

  • Cycling bib tights for cooler conditions and rainy days
  • Main fabric repels water and keeps you warm in foul weather
  • Splash guards on legs & fabric on back shield from road spray
  • Breathable, stretchy material is ideal for training rides
  • Minimal seams help keep water out and warmth in
  • Top-tier chamois provides comfort on longer rides
  • Lie-flat bib strap construction is comfortable against the skin
  • Castelli continues to revolutionize the world of inclement weather gear
  • Item #CST00NQ

Nano Flex Xtra Dry
fall, winter, spring
Progetto X2 Air
lie-flat straps
lower leg fabric
Claimed Weight
Recommended Use
road cycling
Manufacturer Warranty
1 year

Tech Specs

What do you think about this product?


>Rating: 3

New nanoflex material too tight

I returned this product before using it
Runs small
Size Bought
6` 1"
200 lbs

I'm 6'1", 200 lbs with long legs and wear Castelli XXL in Sorpasso tights and have some regular Nanoflex tights in XXL that I use for rain. Thought to try these in XXL and found the material too restrictive and heavier than my others, unfortunately, and had to send them back. I was worried when I held them up and the bottom of the legs hit the top of my dress socks; could fit in them, but found the tightness restricted knee movement.