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Castelli Nano Flex 2 Bib Knickers

4.67 Stars 3 Reviews

Size Guide

Castelli Men's Clothing Size Guide
  S M L XL 2XL 3XL
Chest (cm) 92 96 100 105 110 115
Waist (cm) 80 84 88 93 98 103
Hips (cm) 94 98 102 107 112 117
Inseam (cm) 82 83 84 85 86 87


Castelli Shoe Cover Size Guide
  S M L XL 2XL
Men's/Women's EU Size 39-40 41-42 43-44 45-46 47-48


Castelli Men's Socks Size Guide
  S/M L/XL 2XL
Men's Shoe Size (EU) 35-39 40-43 44/47


Castelli Gloves Size Guide
Men/Women <17cm 17-20cm 20-23cm 23-25cm 25-27cm >27cm


The Castelli ‘Nanoflex 2’ bib knickers are designed to offer an outstanding aerodynamic performance, temperature regulation and muscle compression in even the worst and wettest weather conditions.

Crafted from Castelli’s purposefully engineered Nano Flex fabric, the bib knickers use millions of tiny nanofilaments that resist moisture and allow the rain to simply fall off you as you ride. The ‘Nanoflex 2’ bib knickers are fitted with a KISS Air seat pad which features a multi-density foam filling and a super soft, brushed microfibre top that guarantees unrivalled cushioning, comfort and support from start to finish.

Additional Nano Flex base fabric with Nano Flex Light overlays to the thighs, knees and rear ensure maximum water-resistance while a reduced seam construction minimises any smaller entries for water to come into contact with your body. Mesh bib straps offer superior ventilation and the bib knickers also feature GIRO³ ankle grippers and YKK® ankle Camlock zippers. The Castelli ‘Nanoflex 2’ bib knickers’ sleek black design is complete with reflective details for enhanced visibility and safety in low-light conditions and signature Castelli branding. – L.R.

Key Features:

  • Castelli ‘Nanoflex 2’ Bib Knickers
  • Crafted from Castelli’s Nano Flex fabric which uses millions of tiny nanofilaments for the most water-repellent finish on the market
  • KISS Air seat pad adapts to your body shape for maximum comfort in the saddle
  • Nano Flex base fabric and Nano Flex Light overlays to the thighs, knees and rear for maximum protection
  • YKK® Camlock ankle zippers with reflective detailing
  • Reduced seam construction
  • GIRO³ ankle grippers position the tights and seal around the shoe cover
  • Weight: 251g (Large)
  • Temperature Range: 6°-18°C / 43°-64°F
Nano Flex Fabric
All-Weather Protection
Size / Fit:

Aerodynamic Fit

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: .

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing My Account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

Customer Reviews


3 Reviews

5 Stars 2
4 Stars 1
3 Stars 0
2 Stars 0
1 Stars 0

Top Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.

Knee Warmer free

I kind of wish it has a different color but this one does the job I asked. I don't need a knee warmer if I had multiple of this type of bib. I like its back design with a flat plane so I got my back covered rather than exposed to chill. It is good when I had some sunshine but the bit of chill when it is just cloudy.


Splendid They do what it says on the tin. Dry, warm, comfortable. What more can be said

Castelli Bib knickers

Purchased these bib knickers to replace my old dhb ones - so a bit of a step up. Wore them when it was drizzly but still rather warm for the time of year (November). They kept me both warm and dry and although it wasn't torrential rain the Nano Flex Light covering kept the water out well. As with all Castelli items, finding the correct size can be an issue (they tend to come up smaller than expected) but I found the medium to be a good fit and very comfortable (I'm 5' 8", 30" waist, 30" inseam). There was no "riding up" of the legs and they remained in place well. Overall a good pair of bib knickers for a mid range priced item.

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