UA RUSH™ is infrared technology that reflects your body´s energy to help you work harder & recover smarter.Soft knit fabric with engineered mesh ventilation, mapped to the places you need it most.Nearly sew-free design to eliminate chafing.4-way stretch material moves better in every direction.Material wicks sweat & dries really fast.High-rise waist for optimal coverage & support.Odor control technology minimizes odor.