Heatgear - For when it"s hot. Keeping athletes cool and dry. Lightweight, high-performance fabric maximizes comfort and breathability. * Moisture Transport System - Under Armour"s signature Moisture Transport System wicks moisture from your skin, keeping you dry and your body temperature consistent in any condition * 4-way stretch improves mobility/comfort and accelerates dry-time for the athlete. * Flatlock Seams - giving you amazing comfort and redusing any rubbing or chaffing which can occur * Anti-Odor Technology - prevents the growth of odor causing microbes.