This any-workout shirt is ready to head out the door at a moment's notice. Made with a warmer Merino-polyester blend, our PhD Light Long Sleeve is expert at moving moisture away from your body while you're working out in cooler weather. The fabric dries quickly after you hang it up and maintains its shape over hill and dale, through weather and sweat. Designed for women, this shirt was made using our body-mapping technology, so we know exactly where to put mesh panels for the best breathability. Merrow seam construction ensures a gentle feel next to your skin and increases durability.