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Castelli Castelli Nano Flex 2 Bib Shorts £85.00
Castelli Nano Flex 2 Bib Shorts
Castelli Nano Flex 2 Bib Shorts
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Key Features

Nano Flex Fabric
Minimal Seams For Maximum Water Resistance
Mesh Bib Straps
GIRO3 Leg Grippers
KISS Air Seat Pad
Weight: 191g (Large)
Temperature Range: 14-22C


The fabric used in Castelli's Nano Flex bib short is similar to their Thermoflex in that it is warm and breathable, but they apply a five phase nanotechology treatment to make it extremely water resistant. It's not classed as 100% waterproof, but in all but the heaviest sustained downpours, the water will just bead up and run off. This is also helped by the construction with very few seams to minimise ingress points.

One of the biggest changes to the Nano Flex 2 bib shorts is the upgrade to Castelli's new and improved KISS Air seat pad. The pad aims to incorporate as many of the features and comfort as Castelli's top-of-the-line Progetto X2 Air seat pad but at a more affordable price. Other great features of the Nano Flex 2 bib tights include mesh bib straps for breathability, GIRO3 grippers that hold the bottom of the shorts firmly in place and reflective screen-printed Castelli graphics on both legs for added visibility in low light conditions.

Note: Please click on the above tabs for size guide and technology guide.

Note: Castelli clothing is sized small, Tweeks Cycles recommend you select one size above normal for an athletic fit, or two sizes above if you prefer a more relaxed fit.

NB: Image for illustration purposes only

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