under armor does work and has a purpose, but there are different textures...if u will. the lycra material will wick away sweat and keep your skin dry and somewhat warm. it is the ultimate base layer because it is
flexible and noise free. that particular type is like my cycling clothes that
i train and raced in. now the other type that they have has a fleece
type of lining....this is awesome stuff. nike and addias now have alot of the same shirts and tights available cheaper. if u have a nike outlet store near u, they will have some of the nike tights in the store.