Baleaf Men's 1/4 Zip Pullover Long Sleeve Running Shirts Pocket Quick Dry Lightweight is manufactured by pre-shrunk 90% Polyester 10% Spandex fabric, which is stretchy and soft. It's fitted to your skin with features of lightweight and quick-drying. Put an extra coat without feeling bulky at all. A well-designed zipper side pocket is made to keep your items safe, and the Raglan sleeve style allows great range of motion, also the back reflective elements create more visibility under low-light situations.