size small Safe and Reliable TRIANGLE Motorcycle helmets meet the Dot Fmvss-218 safety standards,using high-quality abs shell and high-density eps linings to provides safety assurance for your ride Multiple Ventilation System The full face motorcycle helmet has 4 well-designed vents at the chin, top and back to optimise airflow and ensure a breathable and comfortable interior Dual Visor System This helmets comes with two visors: clear and a tinted.The clear visor is perfect for all weathers,while the tinted one offers the best protection on sunny days Comfortable & Breathable With a removable and washable thick sponge lining,this helmet offers superior breathability and comfort,keeping you dry and comfortable every time you wear it Adult-size Racing Helmets Our helmets are available in 4 sizes (S,M,L, XL) to fit all adult riders. Measure your head circumference for a perfect fit. Choose the size based on our size chart. If you face any issues with our TRIANGLE helmets, contact us anytime. We ll respond within 24 hours.