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Women's Signature Fly Bib Knicker

Size Guide
Women's Sizing & Care

Velocio Fit is designed for comfort and durability. A form-fit silhouette, we made clothing to fit as many body types and riding styles as possible, without sacrificing performance. Should you want a more relaxed fit, we recommend ordering a size up. Velocio bibs and shorts are made from compressive fabric for riding support through an athletic fit.  Find your fit through our sizing tables below.


  • Size Chest Waist Hips
    XXS 28-32 22-24 32-34
    XS 30-32 24-26 34-36
    S 32-34 26-28 36-38
    M 34-36 28-30 38-40
    L 36-38 30-32 40-42
    XL 38-40 32-34 42-44
    XXL 40-42 34-36 44-46
  • Size Chest Waist Hips
    XXS 71-76 56-61 76-81
    XS 76-81 61-66 86-91
    S 81-86 66-71 91-96
    M 86-92 71-76 96-102
    L 92-97 76-81 102-107
    XL 97-102 81-86 107-112
    XXL 102-107 86-101 112-117

Measurement Instructions

Chest - Start by placing a measuring tape around the largest part of your chest. The tape should be flat but not too snug.

Waist - Your natural waist lies between your bottom ribs and hip bones, close to the navel. To measure, breathe deeply, relax your stomach and lie the tape measure flat around your waist, allowing for a ¼ inch of slack.

Inseam - Measured from your crotch to the base of your ankle.


Care Instructions

Machine wash cool at 86°F (30°C)Wash with like colorsUse mild detergentClose all fasteningsLay flat to dryDo not tumble dryDo not bleachDo not dry clean
4 left in stock!

Supportive and light, these bib knickers are designed from the ground up to meet the highest standards of performance and to make the cool-weather mid-ride stop as short as possible.

This begins with our FLY design: pee break friendly functionality that doesn’t compromise on fit or performance, and pairs it with some of the finest materials available.

Key Features

  • Lightweight bib knicker for those days that require a bit of extra coverage without the added bulk of winter fabric
  • Mesh panel on back of knee for breath-ability and comfort
  • Seamless microfiber bib upper straps for ultra soft feel and enhanced comfort
  • High gauge premium quality Italian Lycra for excellent fit and support
  • Proprietary Signature Chamois developed with Cytech
  • Signature Fly zipper design for bathroom breaks without removing top or helmet. Patent Pending


Fabric 78% Polyamide / 22% Elastane
Made in: Italy


Fit Note: The Signature Fly Bib Knicker bears a highly compressive fit for excellent muscle support and recovery. If you prefer a more relaxed fit, we recommend sizing up.

Year Round

With our complete range of FLY products, from summer weight bib shorts to mid-winter bib tights, we've got you covered no matter the weather. You can also pair any bib short with our Knee and Leg warmer options to extend their range.

Customer Reviews

Based on 9 reviews
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Very excited !!

I super happy with the fit on these! I am 5’4” 127 lbs athletic build Small waist larger hips and bum and thighs of a cyclist (I’m not a bean pole) I purchased the small and I was worried they would be to tight around the l butt Quads and calf’s but this was not the case Nice smooth fit not to tight like my favorite Yoga pants only with the pad ;) I think these will be great for California winters early morning rides and not to hot Transitioning later into the day. I also bought the long sleeve jersey Which is super soft reminds me of Lingerie nice rust color different From all the other high Vis colors Out there!

Isabella T.
United States

Love them so far!

Although, the drop-tail design doesn't seem to be designed for big cabooses- I feel like they're going to rip apart every time I use that function of the bib. Other than that, I am in love with these knickers!

Sarah S.
United States

Better Than Leg Warmers

I got these to ride in 40-60ºF temps when I'd normally wear leg warmers and never take them off. These are so comfortable and way better than clunky leg warmers, plus there's the added convenience of the Fly. I'd recommend these to anyone who asks!

Jennie R.
United States


Love these knickers! They are not thermal nor lined but great on cool days. I do wish they would make a thermal pair!!

Susan H.
United States

Keeps you warm

These are really well fitting, comfortable bibs that kept me warm on a few 35F rides. I drink a lot of water so using the bathroom on rides over 90min in the winter is a given. After eying these for a while, I finally took the plunge. Only reason I’m not giving these 5 stars is that I’m mostly on the mountain bike now and using a pack rubs on the zipper. However, if you are mostly on the road, these are a must buy for the winter!! Size note, I’m 5’4”, 135 and the size medium works.