What Our Gearhead(R) Experts Are Saying:"I wore the Performance Volt Short through a stretch of unpredictable spring mornings and the windproof outer made a noticeable difference when the wind picked up mid-run. The inner brief is supportive without feeling restrictive and the back pocket is just big enough to stash a gel and a key without bouncing around."Some training days start clear and turn sideways fast, and the On Performance Volt Short is built to handle whatever shows up between the warm-up and the cooldown. The iridescent outer layer blocks wind and sheds water to keep the body comfortable when conditions shift, while the DRYTec inner brief moves moisture away from the skin and stretches in four directions to support natural stride mechanics without pulling or bunching through the run. Inner pockets and an additional back pocket give just enough storage to run light and self-sufficient, carrying the essentials without loading up a vest or handheld. The recycled polyamide and polyester construction keeps the overall weight low while delivering the durability needed for high-mileage training weeks, and the racing-inspired silhouette carries enough visual punch to stand out on the track or the trail.