"Men's On® Performance-T: The On® Performance-T is a lightweight men's running shirt built for training runs where staying cool and moving freely matters. The short sleeve design and streamlined fit keep things clean and unrestrictive, so whether you're heading out for an easy recovery run or pushing through a harder workout, the shirt stays out of your way.The Performance-T is built with a lightweight technical fabric that promotes airflow and manages moisture as your effort increases - so sweat doesn't accumulate and slow you down. The fit is streamlined without being restrictive, giving you a full range of arm swing and stride movement without excess fabric. Smooth construction throughout the shirt reduces friction points, which makes a real difference during longer training sessions when small irritations tend to add up.Why Our Fit Experts Love It""I grabbed the Performance-T for a midday run and was surprised how well it handled the heat. It didn't cling or bunch up, and I didn't feel like I was fighting the shirt at any point. It's the kind of top I keep reaching for when I just want to run without thinking about what I'm wearing."" - Dave, Road Runner Sports Fit Expert, San DiegoWho It's Best ForThe On® Performance-T is a strong choice for male runners who want a no-fuss short sleeve running shirt for daily training. If you run in warm conditions and prioritize breathability and moisture management over added features, this shirt fits that need well. It works across a range of efforts - from easy miles to tempo sessions - and the smooth construction makes it a reliable option when you're logging back-to-back training days. VIP Family members can take the Performance-T for a 90-Day test drive with our Perfect Fit Guarantee."