Front, back and flank impact safety.Leatt 3DF foam for impact absorption.Leatt High Density Poly Ethylene hardshell outer protective shield.Multi layer multi plate articulating design.Great fit and very comfortable by 3D design.Ventilation slots for maximum airflow.BraceOn neck brace fitting system.Removable front and rear plate function allows over and under the shirt fitting with a Leatt neck brace.CE tested and certified as impact protection:-Chest prEN1621-3 Level 2-Back EN1621-2 Level 2Adult size fits riders from approx. 150 to 190 lbs.Adult XXL size fits riders approx. 190 to 240 lbs.