Incorporating-design-innovations-from-Alpinestars-8217-Moto GP-program-the-Bionic-Back-Protector-utilizes-Dynamic-Force-Dispersion-Technology-DFD-to-offer-Level-2-protection-in-a-slimline-unobtrusive-protector-for-the-road-&-track-Ueberschrift-DFD-Dynamic-Force-Dispersion-Technology-means-this-protector-is-reduced-in-thickness-&-in-weight-Level-2-protection-means-this-protector-offers-double-the-impact-performance-of-a-CE-Level-1-protector-Ergonomic-5-plate-construction-contours-to-the-natural-curve-of-the-back-Plates-lock-to-lessen-overextension-of-the-back-Construction-allows-excellent-shock-absorption-even-in-repeated-impacts-but-allows-a-thin-light-&-substantially-breathable-core-The-vents-have-been-designed-so-that-even-if-the-protector-is-pressed-hard-against-your-body-air-will-still-flow-through-the-protector-to-enhance-cooling-performance-Adjustable-shoulder-straps-Wide-waist-belt-with-thermo-8208-formed-protection-at-the-sides