Measurements Information (chest/ inch,Weight /pound): M: 30~33 inches, 100~130 pounds L: 33~36inches, 130~150 pounds This women's sport shirt is designed with cooling features and compression zones that transforms the torso and chest. You'll look sharper, stand taller and feel stronger in your clothes. Swathing torsos in a slimming squeeze, these women's compressing shirts are designed to temporarily shave down silhouettes and create the appearance of a lifted stomach while worn underneath clothes. The shirts are made from flexible,breathable materials to stretch over bodies comfortably and have a compressing feel on abdomens and backs.You can wear it for ballgame,walk,cycling,run,fitness. It can also burn fat,shape your body.