SmarTrike safety helmet is a high-end children's helmet for scooting, cycling and skating. The chin strap prevents the helmet from slipping and thus offers optimal protection. SmartTrike helmets can be easily adjusted - perfect for children. ABS shell with 11 air vents cooling system Adjustable size ring (49-53 cm - XS size) Adjustable chin strap. Protective black EPS. 7 mm pads for comfort and safety Overview: Product Dimensions: 20 x 15 x 37 cms Weight: 0.47 Kgs Recommended Age: Suitable for 2 years & above