"Performance to a Tee" for all levels of training, many with V-neck comfort...long runs, intervals, fartleks, track, hills, easy runs, walking and tapering they are all here to help regulate the body's temperature and humidity to save energy and reduce fatigue by using "state of the art" moisture-management systems. If you can train better/faster you'll race better and faster! We lowered the price, now you can lower your times. Bookmark our INFO LINKS for a one-stop to the world of running. Thank You!