Befuddle headwinds when you slip into Endura's MTR Windproof Long Sleeve Jersey. This sleek top features lightweight and windproof front, sides, and arms so you get the wind protection you need in a bulk-free package. A rapid-wick back panel stays in place with a hem gripper and breathes even when you're wearing a hydration pack. Meanwhile, the underarm mesh panels provide additional venting. And, with a full length zipper, three rear pockets, and a concealed zip waterproof security pocket with media port for your phone or MP3 player, you get a features-packed jersey in a feather-light package.