This ultra-lightweight version of the RS7 Carbon, the RS7C LTWT was developed through a collaboration with Penske Racing to reduce weight and enhance airflow for NASCAR drivers and combines an aerospace carbon shell with a comfortable energy absorbing liner system. Able to be used with or without ear cups, and at a race ready weight of under 2.795 pounds, the Bell RS7C Lightweight is the most advanced, lightweight Snell rated helmet for today's racetracks.