Leading Technology for Exercising & Strengthening Jaw Muscles - http://www.jawflex.com/JawFlex is a privately held corporation, founded specifically for the manufacture, promotion and sale of jaw exercise products. JawFlex products were created to help increase jaw muscle size, strength & flexibility using dual coil resistance mimicking the natural biting motion. In combination with conventional jaw protection or padding, JawFlex is focused on training the jaw muscles before the impact occurs. JawFlex is quickly becoming a leader in the technology and development of exercise products. JawFlex products are available in retail and wholesale outlets as well as through distributors, contact sports leagues, professional organizations, school teams at intermediate, high-school, college, and university level. - See more at: http://www.jawflex.com/about/ JawFlex is made in the USA, in a FDA-Registered facility that adheres to Good Manufacturing Practices (GMP).