Fit: Compression–Supports your muscles to prevent fatigue during intense training. Fabric Type: Jersey–A stretchy (plain) knitted fabric, without a distinct rib, used widely for T-shirts Fabric Type: Rib Knit–A textured knit that has the appearance of vertical lines. It is highly elastic and retains its shape Performance Technology: Champion Double Dry –Double Dry rapidly wicks moisture from the body to the outer layer of fabric where it evaporates, giving you the ultimate in moisture management. Seamless–Garment is constructed without seams to provide freedom of movement and prevent skin chafing/irritation.