Specs: Built to fit over glasses Design/Technology: ChromaPop&trad; visor integrated for wide scope with enhanced clarity Fine-tune adjustability via dial Optional photochromic visor that adapts to light conditions 14 vents for optimal breathability Removable Snapfit SL2 ear pads with audio compatibility Zonal Koroyd® coverage to absorb energy and help protect from impact Exterior shell fused to EPS foam for 1-piece construction Compatible with Aleck™ audio system Safety Features: MIPS® Brain Protection System to minimize rotational forces caused by angled impact to the head Certification: ASTM F 040 CE EN 1077:2007 CLASS B, CPSC, CE EN 1078