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Castelli Fondo Bib Knicker - Men's

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Item # CST0454

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Item # CST0454


When it’s not quite chilly enough for full tights, but you still want to keep your knees warm, pull on the Castelli Fondo Bib Knicker and pedal in comfort. The Thermoflex fabric traps body heat and wicks moisture to keep you warm and dry in cool temperatures, and the KISS3 chamois lets you ride all day chafe-free. Fleecy backing helps trap more warm air and feels soft against your skin.

Tech Specs

thermoflex (100% synthetic)
Recommended Use:
cold weather cycling
Manufacturer Warranty:
30 days

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Here's what others have to say...

Can someone provide an approximate ...

Can someone provide an approximate temperature range for these?

I'm a newbie who's looking at buying his first pair of bib knickers and I'm trying to decide to go with lined or unlined.

Best Answer

Not really lined or unlined, but Roubaix or no Roubaix, and then if Roubaix, what weight? Some have an outler windtex, or equivalent layer, but generally not knickers, only full tights. Roubaix, or equivalent knickers are good down to 40ish, depending upon your tolerance. Non roubaix, or equivalent, good down to 50ish. But so much depends upon wind, and how cold is the wind, your exertion, etc. Generally, I think you want a good pair of non Roubaix knicks and a pair of Roubaix knicks and go from there as you determine what your tolerances are. If you buy them and ride much at all, you'll wear them.


These rock.

    5'11", 180lbs wearing a large fits perfectly. These babies are warm down to 35F and are very well made.

    5'10" 185lbs XXL fits, but tight



      These too are my first knickers and they are great. Very comfortable, did a 65 miler, 47 degrees, first time wearing them and no problems whatsoever. Warm and fit well- I am 5'10", 145 lbs and the large fit perfect. Even has fleece up the straps. Very wind resistent. Price is a bargain!


      Thumbs up

        First ride was 60 degrees and raining, at times raining heavily with gusts to 20 mph. The rain soaked through, but that's to be expected. The fleece backing was enough to keep me warm anyway. These are my first pair of knickers and I'm impressed with how breathable yet warm they are. I'm 5'11" 190lbs (34 waist, 33 inseam) and a large fits perfectly.

        Would the sizing for these knickers be...

        Would the sizing for these knickers be similar to that of the Endurance bibs or Velocissimo bibs?

        I wear the same size Velocissimo bibs. The fit feels the same for me.

        Agreed, I wear the same sizing on these as my Endurance bibs.