4,5 Kids Chest ProtectorLightweight, high level body protector for kids Hard shell and 3DF AirFit ventilated soft impact foam 3D design ensures a great fit Multi layer, multi plate articulating design for added comfort Ventilation slots for maximum cooling Flank protection Padded base layer to prevent hard shell rubbing on skin Recesses in the front and rear and new slimmer BraceOn system allow for over and under the shirt Leatt neck brace fit 42 % Polyethylene 31 % Lycra 18