Under Armour Vanish Seamless Run Short Sleeve Men's Running Apparel Fresco Blue : Using levels of mesh mapped to your body, the Under Armour Vanish Seamless Run Short Sleeve provides ventilation where you need it most. A nearly sew-free construction provides chafe-free comfort during your training. Soft knit fabric with engineered mesh ventilation, mapped to the places you need it most Nearly sew-free construction eliminates chafing 4-way stretch construction moves better in every direction Material wicks sweat and dries fast Anti-odor technology prevents the growth of odor-causing microbes 360Adeg reflective details for greater visibility on low-light runs