Back-protector-certified-to-the-EN-1621-2-Level-2-standard-the-most-protective-level-Reduces-the-impact-energy-by-about-9-times-Average-value-of-residual-energy-transmitted-under-the-test-5-5-k N-Ultra-lightweight-490-gr-size-M-Hollow-structure-for-ventilation-&-three-dimensional-mesh-lining-The-3D-mesh-creates-an-air-gap-between-the-back-protector-&-the-body-providing-a-better-circulation-of-the-air-Flexible-Anatomic-Adjustable-elastic-shoulders-&-waist-straps-No-rivets-on-the-back-&-no-hard-plastic