The 3.5 Chest Protector Junior is a great product for those Junior racers as it is slim, lightweight and has CE certified impact protection for the chest and back.
3D multi-layer, multi-plate articulating design ensures comfort as well as great airflow due to ventilation slots, removeable plates in the front and rear mean it can work with and without a Leatt Neck Brace.

Total Leatt® protection score of 7 points
Hard shell and 3DF AirFit ventilated soft impact foam
CE tested and certified as impact protection:
Chest prEN1621-3 Level 1
Back EN1621-2 Level 1
3D design ensures a comfortable, low profile, great fit
Removable front and rear plates and new slimmer BraceOn™ system allows over and under the shirt Leatt® neck brace fit
Ventilation ports for increased cooling
FFM French Motorcycle Federation Certified
Product weight:
995 g (2.20lb)
Sizing:
Junior 147-159cm – 4ft5”-5ft3”