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Image of Castelli Core Drill Short - Men's Black, XXL
 

Castelli Core Drill Short - Men's Black, XXL

The ideal triathlon short for training for your next big event.


 
Image of Castelli Core Drill Short - Women's Black, L
 

Castelli Core Drill Short - Women's Black, L

"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...


 
Image of Castelli Core Drill Short - Women's Black, M
 

Castelli Core Drill Short - Women's Black, M

"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...


 
Image of Castelli Core Drill Short - Women's Black, S
 

Castelli Core Drill Short - Women's Black, S

"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...


 
Image of Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's Black, XXL
 

Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's Black, XXL

Before you assume that all baselayers are created equal, take Castelli's Core Mesh 3 Short-Sleeve Baselayer out on a summer ride with an open mind. Rather than focusing on providing breathable insulation, a warm-weather baselayer like the Core Mesh 3...


 
Image of Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's White, L/XL
 

Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's White, L/XL

Before you assume that all baselayers are created equal, take Castelli's Core Mesh 3 Short-Sleeve Baselayer out on a summer ride with an open mind. Rather than focusing on providing breathable insulation, a warm-weather baselayer like the Core Mesh 3...


 
Image of Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's White, S/M
 

Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's White, S/M

Before you assume that all baselayers are created equal, take Castelli's Core Mesh 3 Short-Sleeve Baselayer out on a summer ride with an open mind. Rather than focusing on providing breathable insulation, a warm-weather baselayer like the Core Mesh 3...


 
Image of Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's White, XXL
 

Castelli Core Mesh 3 Short-Sleeve Baselayer - Men's White, XXL

Before you assume that all baselayers are created equal, take Castelli's Core Mesh 3 Short-Sleeve Baselayer out on a summer ride with an open mind. Rather than focusing on providing breathable insulation, a warm-weather baselayer like the Core Mesh 3...


 
Image of Castelli Core Mesh 3 Sleeveless Baselayer - Men's White, S/M
 

Castelli Core Mesh 3 Sleeveless Baselayer - Men's White, S/M

Castelli believes so much in the power of the fabric it uses to craft the Core Mesh 3 Sleeveless Baselayer that it deviated from its usual performance-related fabric monikers and named it Magic Mesh. Before you get skeptical about the fabric's otherworldly...


 
Image of Castelli Core Mesh 3 Sleeveless Baselayer - Men's White, XXL
 

Castelli Core Mesh 3 Sleeveless Baselayer - Men's White, XXL

Castelli believes so much in the power of the fabric it uses to craft the Core Mesh 3 Sleeveless Baselayer that it deviated from its usual performance-related fabric monikers and named it Magic Mesh. Before you get skeptical about the fabric's otherworldly...


 
Image of Castelli Core Seamless Baselayer - Men's White, XXL
 

Castelli Core Seamless Baselayer - Men's White, XXL

When we're training and racing during the spring months, the last thing we want is sweat held in fabric, keeping us too cold for the descent back down the canyon. Castelli's Core Seamless Baselayer uses a mix of polyester and polyproylene which wick moisture...


 
Image of Castelli Core Seamless Long-Sleeve Base Layer - Men's Black, L/XL
 

Castelli Core Seamless Long-Sleeve Base Layer - Men's Black, L/XL

As a warmer and arguably more comfortable alternative to their well-placed and beloved Prosecco Tech base layer, the Castelli Core Seamless Long-Sleeve Base Layer is well…seamless. The soft and synthetic blended fabric form-fits to comfort and work...


 
Image of Castelli Core Seamless Long-Sleeve Base Layer - Men's Black, S/M
 

Castelli Core Seamless Long-Sleeve Base Layer - Men's Black, S/M

As a warmer and arguably more comfortable alternative to their well-placed and beloved Prosecco Tech base layer, the Castelli Core Seamless Long-Sleeve Base Layer is well…seamless. The soft and synthetic blended fabric form-fits to comfort and work...


 
Image of Castelli Core Seamless Long-Sleeve Base Layer - Men's Black, XXL
 

Castelli Core Seamless Long-Sleeve Base Layer - Men's Black, XXL

As a warmer and arguably more comfortable alternative to their well-placed and beloved Prosecco Tech base layer, the Castelli Core Seamless Long-Sleeve Base Layer is well…seamless. The soft and synthetic blended fabric form-fits to comfort and work...


 
Image of Castelli Core Seamless Short-Sleeve Base Layer - Men's Black, L/XL
 

Castelli Core Seamless Short-Sleeve Base Layer - Men's Black, L/XL

The seasons never slow you down, and your kit shouldn't either. That's why Castelli designed the Core Seamless Short-Sleeve Base Layer to keep you warm and dry all year long. The reimagined  fabric blend repels moisture so you won't feel like a wet...


 
Image of Castelli Core Seamless Short-Sleeve Base Layer - Men's Black, S/M
 

Castelli Core Seamless Short-Sleeve Base Layer - Men's Black, S/M

The seasons never slow you down, and your kit shouldn't either. That's why Castelli designed the Core Seamless Short-Sleeve Base Layer to keep you warm and dry all year long. The reimagined  fabric blend repels moisture so you won't feel like a wet...


 
Image of Castelli Core Seamless Short-Sleeve Base Layer - Men's Black, XXL
 

Castelli Core Seamless Short-Sleeve Base Layer - Men's Black, XXL

The seasons never slow you down, and your kit shouldn't either. That's why Castelli designed the Core Seamless Short-Sleeve Base Layer to keep you warm and dry all year long. The reimagined  fabric blend repels moisture so you won't feel like a wet...


 
Image of Castelli Core Seamless Short-Sleeve Base Layer - Men's White, L/XL
 

Castelli Core Seamless Short-Sleeve Base Layer - Men's White, L/XL

The seasons never slow you down, and your kit shouldn't either. That's why Castelli designed the Core Seamless Short-Sleeve Base Layer to keep you warm and dry all year long. The reimagined  fabric blend repels moisture so you won't feel like a wet...


 
Image of Castelli Core Seamless Short-Sleeve Base Layer - Men's White, S/M
 

Castelli Core Seamless Short-Sleeve Base Layer - Men's White, S/M

The seasons never slow you down, and your kit shouldn't either. That's why Castelli designed the Core Seamless Short-Sleeve Base Layer to keep you warm and dry all year long. The reimagined  fabric blend repels moisture so you won't feel like a wet...


 
Image of Castelli Core Short-Sleeve Tri Suit - Men's Belgian Blue/White, 3XL
 

Castelli Core Short-Sleeve Tri Suit - Men's Belgian Blue/White, 3XL

What Our Gearhead® Experts Are Saying:“As someone new to triathlons, the Core Tri Suit Short Sleeve has been a game-changer. It’s got all the essentials—rear pockets for nutrition, aerodynamic sleeves, and the KISS Tri pad that’s just the right...


 
Image of Castelli Core Short-Sleeve Tri Suit - Men's Black, 3XL
 

Castelli Core Short-Sleeve Tri Suit - Men's Black, 3XL

What Our Gearhead® Experts Are Saying:“As someone new to triathlons, the Core Tri Suit Short Sleeve has been a game-changer. It’s got all the essentials—rear pockets for nutrition, aerodynamic sleeves, and the KISS Tri pad that’s just the right...


 
Image of Castelli Core Short-Sleeve Tri Suit - Men's Black, L
 

Castelli Core Short-Sleeve Tri Suit - Men's Black, L

What Our Gearhead® Experts Are Saying:“As someone new to triathlons, the Core Tri Suit Short Sleeve has been a game-changer. It’s got all the essentials—rear pockets for nutrition, aerodynamic sleeves, and the KISS Tri pad that’s just the right...


 
Image of Castelli Corretto Jersey - Men's Belgian Blue/Blue Fiamma-White, 3XL
 

Castelli Corretto Jersey - Men's Belgian Blue/Blue Fiamma-White, 3XL

"What Our Gearhead® Experts Are Saying:""I wear the Corretto Jersey when I want that race-day feel with all-day comfort. It’s snug and fast, but the fabric zones are dialed so it doesn’t feel restrictive. Breathes well even when the temps climb,...


 
Image of Castelli Corretto Jersey - Men's Belgian Blue/Blue Fiamma-White, L
 

Castelli Corretto Jersey - Men's Belgian Blue/Blue Fiamma-White, L

"What Our Gearhead® Experts Are Saying:""I wear the Corretto Jersey when I want that race-day feel with all-day comfort. It’s snug and fast, but the fabric zones are dialed so it doesn’t feel restrictive. Breathes well even when the temps climb,...


 
Image of Castelli Corretto Jersey - Men's Belgian Blue/Blue Fiamma-White, M
 

Castelli Corretto Jersey - Men's Belgian Blue/Blue Fiamma-White, M

"What Our Gearhead® Experts Are Saying:""I wear the Corretto Jersey when I want that race-day feel with all-day comfort. It’s snug and fast, but the fabric zones are dialed so it doesn’t feel restrictive. Breathes well even when the temps climb,...





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