Nutcase sets the standard for fun when it comes to kid's helmets. The all-new Little Nutty raises the bar again featuring industry safety leader MIPS in addition to being filled with protective Crumple Zone EPS foam. Now offered in two sizes, the Little Nutty ensures ultimate fit and comfort for kids ages 3 and up. With 15 new designs and 11 contoured air vents, we not only want kiddos to look cool, we want them to remain cool.Features:- Durable Injection molded ABS shell with engineered Crumple Zone EPS protective foam featuring MIPS Safety Protection- New improved visor included!- 11 contoured vents for ultimate cooling- Snap and go, No-Pinch Fidlock Magnetic closure- Heat sealed, 3-piece pad set / GROW Flex Fit System cradles and ensures safety, individual fit and comfort and 360 degree reflectivity via logos and fit system- Toddler ( 48cm - 52cm ), Youth ( 52cm - 56 cm )- ASTM F1492 Certified- Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older