Nike Dri-FIT fabric - Wicks away moisture to help keep you dry and comfortable. * Adjustable Shoulder Straps - For a comfortable, supportive fit. * Flat Locked Seams - Helps to reduce the chance of chaffing whilst running. * Body-Contoured Seams - Map the natural shape of the body for a comfortable fit * Mesh Panels - At back for great ventilation and breathability keeping you drier and more comfortable.