The One Industries Ion 14 Zip Short Sleeve Jersey gives you the tech T Shirt styling that's becoming more common at the trailhead, without abandoning the features you need. With a breathable, antimicrobial fabric, it'll keep you cool and fresh. The quarter length zipper ups the cooling factor, while a zippered rear pocket gives you extra carrying capacity. Think of it as the best of new school form, with a touch of old school function. The Ion jersey is built from a super lightweight polyester fabric. In addition to being easy to wash, the polyester makes it highly breathable, so moisture evaporates, instead of condensing inside the jersey and turning you into a human sweatbox. The mesh panels at the underarms enhance the cooling properties of this top. It's cut for riding, with a slightly dropped tail, and a fit that's baggy enough to be unrestrictive, without giving way to excess flapping. The quarter length zipper at the front lets you dump excess heat in a flash, and the zippered rear pocket ensures that your ride essentials stay in your pocket for the duration of the ride. The One Industries Ion 14 Zip Jersey Short Sleeve Men's is available in five sizes, from Small to XX Large, and in the colors Black and White.