Men's Airy Fit Performance Long Sleeve

I've basically lived in this since it arrived. The fabric is so light it barely registers, even on a warm day, and the sleeves don't ride up when I reach for things.

Wore this under a hoodie on a chilly morning run and it never felt bulky or sweaty. The standard fit is spot on through the shoulders without being tight anywhere.

Wore this on a 6-mile trail run and it never clung or got swampy, even on the climb. The long sleeves block the sun without feeling like a jacket, which is exactly what I wanted for shoulder-season runs.