Tested and certified, this chest protector uses both hard shell and 3DF AirFit impact foam protection. The impact foam is flexible for a comfortable fit yet instantly transforms into a hard, energy absorbing substance to protect you during a crash. For high impact or stone deflection, the hard shell areas are made of high density poly ethylene (HDPE). The chest protector offers chest, back, shoulder and flank protection and scores a total of 17 points in the Leatt protection system. The 3D and multi-layer, multi-plate design promises a comfortable fit – and your Leatt neck brace will integrate comfortably with the protector. It is further also ventilated with ventilation slots that provide maximum airflow. For a slightly higher level of protection, take a look at the 5.5 Pro HD Chest Protector which has a score of 20 points. Features Hard shell and 3DF AirFit ventilated soft impact foam Flank protection FFM-French Federation Certified Total Leatt® protection score of 17 points Multi-layer, multi-plate articulating design Mesh base layer Our 3D design ensures a great fit that is very comfortable Ventilation slots for maximum airflow BraceOn™ neck brace fitting system Removable front and rear plates allow over / under the shirt Leatt® neck brace fit Weight: 1.450g – 3.2 lbs Unisex Fit, 70 to 90 kg