D3O CE Armor Back
D3O materials in their raw state flow freely when moved slowly, but on shock, lock together to absorb and disperse energy, before instantly returning to their flexible state.
This reaction is counter intuitive. The greater the force of the impact, the more the molecules lock together and the greater the protection.
At 18mm, the Viper Pro is the ultimate back protector solution and passes level 2 of the CE certification EN1621-2.