What do you do when it's too cold to run in a short sleeve, but too hot to run in a long sleeve? Well you don't stay on the couch, that's for sure. Just throw on the Patagonia Capilene Cool Lightweight Long-Sleeve Shirt and you'll have the perfect balance of breathability and coverage for those in-between weather runs. Specifically designed to perform in warmer conditions, Capilene Cool Lightweight offers lots of breathability and enhanced moisture wicking that'll make it easy to wear a long-sleeve in mild temps. It's got a special miDori bioSoft treatment that enhances its wicking properties and prolongs its softness and next-to-skin comfort over time. Meanwhile, set-in sleeves and a slight drop-tail ensure easy movement and full coverage while you run, and Polygiene anti-odor technology works to keep your shirt fresh after even the longest runs.