Designed to move with you, the BLUEPRINT RCH-0 Under Protector delivers lightweight, low-profile impact protection without sacrificing mobility or comfort. Built with breathable materials and RHEON(TM) armor technology, it provides certified protection while maintaining a flexible, under-jersey fit. From moto to bicycle to snow, it&';s engineered for riders who want confidence without compromise. Certified Impact Protection CE Level 1 certified chest and back protection meeting EN1621-3 and EN1621-2 standards for impact performance FIM-compliant design delivers trusted protection for competitive and high-performance riding environments Advanced Impact Technology Custom RHEON(TM) molded armor engineered to absorb and manage impact forces while maintaining flexibility and rider mobility Low-profile chest and back protection system reduces bulk while maintaining critical coverage zones Lightweight Breathable Construction Breathable mesh chassis promotes airflow and helps regulate body temperature during extended rides Spacer mesh comfort zones enhance ventilation and reduce heat buildup in high-output conditions Soft moisture-wicking materials provide next-to-skin comfort for all-day wear Precision Fit System G-Hook closure system with four adjustment loops and elastic slider allows for micro-adjustable, secure fit Fully adjustable waist straps enable riders to dial in fit once for consistent performance Low-profile performance fit designed to move naturally with the rider under a jersey Durability & Reinforcement Reinforced TPR anchor points increase durability in high-movement and high-stress areas Multi-Sport Versatility Designed for motocross, off-road, mountain bike, and snow use across a wide range of riding conditions Ideal for riders seeking lightweight, flexible protection with minimal bulk Size & Fit Range Available in Youth