- At the core of the Nexus E:Protect is a breakthrough in sustainability. We’ve forged the outer shell from polypropylene and fortified it with a wood fibre matrix. This dynamic synergy, meticulously crafted at Centurion, defines more than a product; it’s a commitment to a greener tomorrow. The Nexus E:Protect excels with a three-layer design, ensuring superior impact resistance, adaptability, and lightweight comfort.