High performance downhill style full face mountain bike helmet Full integrated Koroyd (r) core for superior energy absorption Large vents including top “air intake” zone & large diameter Koroyd tubes for increased airflow Fully goggle compatible One-hand micro-adjustment fit system Antibacterial fast wicking padding Covered by Endura’s Crack Replacement Policy & Endura Product Guarantee Certified to ASTM F1952 & CE Standard EN1078:2012 + 1 A1:201290 day Satisfaction guarantee, High performance downhill style full face mountain bike helmet, Full integrated Koroyd (r) core for superior energy absorption, Large vents including top “air intake” zone & large diameter Koroyd tubes for increased airflow, Fully goggle compatible