Incorporating-design-innovations-from-Alpinestars-rsquo-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-YOUTH-BIONIC-BACK-PROTECTOR-KEY-FEATURES-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-Level-1-protector-Level-2-Impact-performance-under-9k N-transmitted-force-in-accordance-with-EN-1621-8208-2-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-airflow-has-been-designed-that-even-if-the-protector-is-pressed-hard-against-your-body-air-will-still-flow-through-from-the-top-to-the-bottom-Adjustable-shoulder-straps-Wide-waist-belt-with-thermo-8208-formed-protection-at-the-sides