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Castelli Leader Free Aero Bib Short - Women's

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Item # CST00FL

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Item # CST00FL

The race.

As we approach the third anniversary of La Course and women riding in Paris at last, we’re excited to announce a women’s line of our Tour-themed Castelli collaboration. Whether you choose to ride with women like Armistead, Vos, and van der Breggen in mind or draw your ride inspiration from their male counterparts, the Castelli Leader Free Aero Bib Shorts gives you the chance race and train in yellow. Though most of us can never hope to ride the way our idols do, this CC-exclusive design allows us to show solidarity with the growing women’s cycling movement as we work to earn points of our own on the local race circuit.

Whether you’ve had your UCI card for decades or count yourself as an aspiring Cat 3, the fit and construction of Castelli’s Free Aero Bib Shorts make a venerable companion when you head to the line to start your next race. We knew exactly which aesthetics we wanted on the Leader, but we knew better than to try and match the apparel expertise of Castelli, so we opt instead for adding our graphics to the brand’s proven top-end race short. Outer leg panels of Vortex lead the way through the wind, using a dimpled surface to more efficiently manage airflow, while along the inner legs Forza, a Lycra blend, stabilizes your muscles to lessen fatigue over time. Both fabrics are extremely adept at wicking moisture away from the surface of your skin as well, moving moisture to keep you as cool and dry as possible while you fight for space in the peloton.

We always admire a brand that devotes specific attention to waist construction in kit, acknowledging that it’s an area that can have a key impact on our comfort in the saddle. Castelli altered its construction to accommodate women specifically, providing a streamlined fit to support your core and lower back as you spend hours stretched out in the saddle. Comfort was a key tenet of the Free Aero’s design process, and it's the reason for the open bib strap design. An airy mesh bib and precise straps employ a minimal fit to prevent restriction on all-out efforts when you need every breath. Blending comfort and functionality, the flexible, thin Giro Air grippers are far stronger than they look at first, and they hold either leg gently in place with none of the pinch or irritation of elastic inserts.

Arguably the most important aspect of comfort comes from chamois design, as it can most directly affect the length and frequency of our rides. Carefully crafted for a fit specific to women, Castelli’s Progetto X2 Air Donna insert exemplifies a women’s chamois done right. It features the same plush foam on a stretchy platform as its men’s counterpart, just arranged differently to better accommodate women. The insert has been pared down to include only the most necessary cushioning to allow it to remain as light and breathable as possible, and it’s topped with a soft, odor-resistant microfiber to further improve breathability.

  • Women-specific race shorts with CC-exclusive graphics
  • Contoured race fit with breathable, supportive fabric
  • Minimal bib strap construction doesn't restrict breathing
  • Expertly crafted chamois achieves lightweight support
  • Be inspired by the sport's top women or the yellow jersey as you train and race

Tech Specs

[outer leg] Vortex, [inner leg] Forza (38% Lycra)
Progetto X2 Air Donna
yes, Carré
Leg Gripper:
Giro Air
Recommended Use:
road cycling
Manufacturer Warranty:
1 year

Size chart

Castelli Sizing Chart

Note: Castelli has a "Euro" slimmer fit. We suggest ordering at least one size larger than your normal US size.

Women's Cycling Apparel
Chest 79cm
Waist 63cm
Hips 87cm
How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Natural Waist:
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.
Using pants that fit well, measure the crotch seam to the bottom of the leg.

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