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Castelli Nanoflex 2 Bib Tights

One of our best-selling bibtights, the Nano Flex 2 continues to impress. Perfect for cold and/or inclement weather, this garment can handle any 3 season condition that comes its way. It's the ultimate in value and is considered both as cold weather and protection wear, due to its thermal capacity and weather repellency from the Nano Flex treatment.

This treatment consist of a coating that is constructed from billions of microscopic filaments. The grouping of these filaments provide protection from wind and water, but are just porous enough to release moisture and perspiration from within. Nano Flex is soft and elastic which leaves the garment feeling comfortable yet supportive. Etymology of Nano Flex comes from combining the metric prefix nano with the word flex. Now combine nano with flex and you get Nano Flex, the magical material that provides millions of microfilaments that coat the thermal based fabric Thermoflex. This Nano Flex/Thermoflex combo provides ample protection from the elements in a flexible and comfortable garment. The YKK ankle Camlock zippers make getting it on and off much easier, and they also features reflective tape.

Castelli chose the venerable Kiss Air insert for chamois detail. It features seamless integrated technology that has soft fabric on the skin care layer is lined with 4mm of soft foam for additional comfort. The Kiss Air employs infinite shaping of the high density foam to make sure the right support is located where it is most required.


  • Excellent protection, warmth in moderate weight bibtight
  • Weather resistant Nanoflex treatment
  • Thermoflex core material
  • Fleece lined, maintains heat, wicks away moisture
  • Anatomic cut
  • Free-style uppers with mesh backing, straps
  • Kiss Air pad insert
  • Giro3 single-layer leg gripper
  • YKK ankle Camlock zippers with reflective tape for high visibility
  • Rear reflective inserts
  • 40-65° temp range
  • Perfect 3 season garment
  • Sizes: Small, Medium, Large, XL, XXL, 3XL
  • Color: Black
  • Weight: 251 grams (Medium)

Nano Flex starts out as the Castelli Thermoflex fabric. This fabric is then treated with a 5 layer microfilament coating that provides a weather barrier.
Thermoflex + Proprietary Microfilament Coating Treatment = Nano Flex.

Sale Price
Reg Price $149.99
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Castelli Sizing Chart

Mens Shorts, Bibs, Knickers & Tights
Mens Jerseys, Jackets & Vests
Womens Shorts, Bibs, Knickers & Tights
Womens Jerseys, Jackets & Vests
Palm Circumference6-7"7-8"8-9"9-10"
Mens Socks
Womens Socks


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