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Core Drill Short - Women's
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Light on padding, heavy on versatility, the Core Drill Short splits the difference
What Our Gearhead® Experts Are Saying:
"I wore the Core Drill Short for a full sprint triathlon and never noticed the transition from bike to run. The fleece liner smoothed things out on the saddle but didn't bunch up or chafe once I started running."
A full seat pad makes sense for a long ride, but it's dead weight the moment you start running, and the Core Drill Short skips it entirely. A fleece seat liner smooths out time in the saddle without adding bulk, then all but disappears once the transition zone hits and the run begins. Flat-lock stitching keeps seams from rubbing at any point in the race, while a raw-cut leg with internal silicone grip elements holds everything in place without a hem to catch or ride up.
Details
- Triathlon short built for combined bike and run legs
- Fleece seat liner smooths the ride without added bulk
- Flat-lock stitching reduces chafing across long distances
- Raw-cut leg with silicone grip prevents rise during movement
- Lightweight 129g construction stays minimal through every transition
- Item #CSTZ7T0
- Material
- synthetic
- Season
- 3
- Fit
- form-fitting
- Bib
- none
- Leg Gripper
- yes
- Manufacturer Warranty
- limited 2 years
- Activity
- road cycling, triathalon
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Frequently Asked Questions
How should I choose a size in the Castelli Core Drill Short for women?
Use Castelli’s women’s size chart and prioritize your waist and hip measurements. If you’re between sizes or prefer a less compressive fit, size up.How does the Castelli Core Drill Short suit sprint triathlon training and racing?
Its fleece seat liner smooths the ride on the bike and is designed to feel unobtrusive during the run. The short is intended for training and racing when a full seat pad isn’t needed.How should I care for the Castelli Core Drill Short?
Follow the sewn-in care label. A gentle cold wash with mild detergent, avoiding fabric softener and bleach, and air-drying helps care for the shorts.









