Alternator Powermaster 7519

The Un-D Shurt base layer is designed to wear Un-Der a cycling jersey.

Form fitting and thin, the Un-D Shurt allows cyclists to dial in their clothing for specific temperature ranges without adding much bulk or weight to their outfit.

Suited perfectly for temperatures from 40 - 80 degrees fahrenheit, Un-D Shurt has a thermal property that keeps you comfortable on cool descents but doesn't overheat on climbs.

Made from post consumer recycled polyester certified by Repreve, Un-D Shurt is easier on the environment, too.

The original product in the DeFeet Un-Dline of base layers, the Un-DShurt has been around since 1997.

For years, we sourced our special fabric, sewed them in tiny batches, and shared them with the world's top cyclists like a home brewer might pour friends a seasonal spirit from their only barrel.

These racers returned, bringing more with them, and telling tales of how their lone Un-DShurt had to be hand-washed every night during the season so that it would be ready the next morning.

We knew we had a good recipe; we just weren't that serious about selling them.

The Un-DShurt really does deserve a spot in every rider's bag no matter what level they are.

Our hand-crafted batches of Un-DShurt are larger than ever.

Step up and try our special concoction.

You may end up wanting one of every model we make.

bikeradar.com review of Un-D Shurt Long Sleeve.