Be confident in your purchase, we are a Certified Just1 Dealer, How cool is that?!? Features: High quality thermoplastic resin external shell 2 shell sizes 2 EPS Sizes J.1.E.R. Emergency Cheek pad Removable System Double D retention system Removable and washable inner lining PROTX 2 antimicrobial technology New lining treatment Fully ventilated EPS-lined chin bar integrated vented roost guard 5 intake and 6 exhaust vents ECE Certification DOT Certification Crafted with a high-quality thermoplastic resin shell, the Just1 Just1 J40 FLASH Helmet offers optimal safety with dual EPS sizes, an emergency cheek pad removal system, and a double D retention system.he removable washable inner lining features PROTX 2 antimicrobial technology, ensuring comfort and hygiene. Ventilation is enhanced with a fully ventilated EPS-lined chin bar, integrated vented roost guard, and 5 intake plus 6 exhaust vents. ECE and DOT certifications underscore the helmet's commitment to safety standards.