The C-Preme Rasskulz Infant 1+ Helmets use 3D graphics and Polycarbonate Shell. Has an EPS liner with CPSC bike and ASTM skate certifications for safety. Includes the C-Preme Fit System.These helmets give great visibility and fun to your kids. Details: a C-Preme Fit System a Flat back design for corfortable seating in a child carrier or trailer a Easy to use dial fit system a Speckled EPS foam with inner air channels to improve airflow a Recommended for kids 1-3 years old. (48-52cm) a Adjustable straps and aerodynamic cooling vents a Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 1 and Older (Extended Head Coverage). Also complies with U.S. ASTM Safety Standard for multi-impact Skateboard Helmets. a Fit Type: Universal Fit a Sport Type: Cycling