The FIRST and ONLY helmet to fully integrate the best of high impact absorbing EPS Foam with thick dual density soft foam and plush Sweatsaver fabric, delivering the ultimate in comfort with dual certified protection. Now featuring Mike McGill's legendary Skull & Snake graphic! PRODUCT DETAILS Certification: CE EN 1078 European Safety Standard Includes 2 sets of Sweatsaver liners to customize fit A portion of sales will be donated to the The Skatepark Project (formerly The Tony Hawk Foundation) to continue its mission of empowering youth through the creation of public skateparks in low-income communities. FIT GUIDE VIDEO To ensure a perfect fit, measure the circumference of your head starting in the middle of your forehead and match it with the sizes below: XS/S 20 - 21.25 in (51 - 54 cm) S/M 21 - 22.5 in (53 - 57 cm) L/XL 22.5 - 23.5 in (57 - 60 cm) XL/XXL 23.5 - 24.5 in (60 - 63 cm) IDEAL FOR Biking; Skateboarding; In-Line Skating/Roller Skating, Scooters SAFETY CERTIFICATIONS Complies with CE EN 1078 & U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older and ASTM F-1492 Skate safety standards.