A 2014 study (Rowson S, Duma S, et al 2014) reporting that football helmet design can reduce concussion risk has prompted criticism from some of the football helmet manufacturers whose helmets were not involved in the study. In the interest of accurate and complete reporting on the study, set out below is the full text of an email dated February 10, 2014 from Rob Erb, Chief Executive Officer of Schutt Helmets.