The-THOR-Level-1-kidney-belt-provides-stability-&-protection-to-the-lower-back-area-In-the-event-of-impact-the-THOR-protects-your-lower-back-from-injuries-by-evenly-distributing-forces-of-impact-across-the-surface-of-the-belt-&-lessening-their-damaging-effect-The-addition-of-lightweight-materials-to-the-shock-absorbing-PU-foam-makes-the-THOR-very-comfortable-PROTECTION-FEATURES-Outer-shell-microcellulare-PU-foam-3D-air-mesh-Protection-EVA-foam-pr EN-1621-2-level-1-ERGONOMIC-FEATURES-Fit-ergonomic-fit-Adjustability-double-adjustment-tab-Ventilation-ventilation-panel-Features-airchannels-supports-torso-&-lower-back