Size Guide: Chest Measured Pit to Pit XS: 25"-28" S: 29"-32" Alpinestars, since its inception in 1963, is now the world-leading manufacturer of professional racing products, motorcycling airbag protection, high-performance apparel & technical footwear. Alpinestars understands that the best design & research is achieved under extreme conditions. 100% Cotton Crew Neck Short Sleeved Tight Fitting Logo Print Front & Back Eyelet Detail on Shoulder Available in XS, S