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Castelli Nano Flex 2 Bib Shorts


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SKU: CS155360102



The Castelli Nano Flex bib short features a water-repellent stretch woven thermal fabric and Kiss Air seat pad. You will find these the perfect short for cool damp rides, wet races, early season sportives, gravel or cross adventures and numerous other situations.

In dry conditions, Nano Flex fabric is stretchy breathable and thanks to the brushed inner surface warm. But in damp conditions, the nanotechnology water-repellant surface keeps much of the moisture at bay. In heavier rain, some moisture will get through but the shorts never get waterlogged and retain their thermal qualities even when damp. They also dry quickly.

The Nano Flex bib shorts feature the Castelli Kiss Air seat pad. Its dual density padding with infinitely variable thickness combined with anatomical shaping ensures all-day comfort with cushioning just where you need it and with none of the bulk of less sophisticated pads.

A full mesh bib keeps the shorts in place without affecting breathability while the Giro3 leg grippers stop the legs from creeping up.

These are a utility piece for wet days so don't expect any colours, its black only. But a reflective Castelli screen print on both legs as well as rear-facing reflective tabs help you to be seen on dark roads.

Key Features
  • Nano-Flex fabric provides outstanding warmth and stretch, with water resistance treatment.
  • Kiss Air seat-pad for all-day comfort.
  • Giro3 single layer engineered leg gripper.
  • Mesh bib straps for breathability
  • Reflective screen-printed Castelli logos on both legs
  • Two rear reflective tabs labels.
  • Castelli comfort range 14˚-22˚c
  • Weight 191g (L)
  • Men's sizes S-3XL

ABOUT Castelli

Castelli Cycling is the most innovative, stylish and prestigious cycling clothier in the world. Decades of pro cycling development and a passion for perfection in materials, cut and performance has seen the brand reinvent cycle wear time after time. From the first Lycra shorts to sublimated printing, the game-changing Gabba and aerodynamic apparel, Castelli continues to set a path that others can only follow while maintaining generations of Italian heritage. Read more about Castelli.


Founded by real cycling enthusiasts in 2004, our passion for elite performance runs through everything we do at Saddleback. Our team of dedicated roadies, mountain bikers and triathletes practice what we preach to bring you the finest cycling products and a superior service to match. We're the official UK home of 3T, Castelli, Chris King, ENVE, Intense, Peaty's, PUSH, Sidi, Silca, Stages, Troy Lee Designs and Wolf Tooth.

Size Guide

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Fabric Composition

MAIN FABRIC: 84%Polyamide 16%Elastane, MESH: 85%Polyamide 15%Elastane, BOTTOM LEGS: 53%Elastane 47%Polyester