Kali Protectives Maya Helmet Anti-microbial pads, flex moto-style visor, accessory mouting system, bug liner and locking buckle sliders 12 vents and Dual closure system EN 1078 and CPSC Certifications PC shell and under wrap EPS foam and Weight: 360 G / 12.7 OZ S/M (55-61 CM), L/XL (60-63 CM)