This helmet is Dual Certified for Bike and Skate and has a patented MIPS Technology low-friction layer to reduce rotational forces caused by angled impacts.  We worked closely with our top riders in vert, longboarding, BMX, commuting, and derby to refine the shape, fit, and function
 
PRODUCT DETAILS
MIPS Technology:  Developed by brain surgeons and scientists to reduce rotational forces to the brain caused by angled impacts
Dual Certified: Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older and ASTM F-1492 Skate safety standards.
All new ABS Outer Shell with EPS liner, re-engineered to provide our best-fitting low-profile Dual Certified helmet
Includes 2 sets of Fit Pads to customize fit
 
FIT
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 19.7 – 21.5 in (50 – 55 cm)
S/M 21.5 – 22.75 in (55 – 58 cm)
L/XL 22.75 – 24 in (58 – 61 cm)

If your measurements are in-between the sizes shown or you’re simply in doubt, we strongly recommend sizing up to the larger size. We have found over the years that customers do better when they choose the larger size.