Chest Protector 4.5 EvoThe Chest Protector 4. 5 EVO provides premium protection for the chest and back. This model is 22% lighter and 50% more ventilated compared to the 2023 model, offering enhanced comfort and breathability on extended rides. Constructed from a hard shell and FlexMesh Pro combination, the Chest Protector 4. 5 EVO is ventilated armour that not only protects but also keeps you cool under pressure. The FlexMesh Pro design makes excellent use of flex joints,