DESIGN - Cruise around like a shark out of water in this radical shark filled graphic helmet which features a 3D fin hawk! STYLE- A perfect light weight helmet for your little rad shark to use while riding a bike, scooter, skateboard or rollerblades! SPECIFICATION - Recommended for ages 5-8 years but will fit anyone with a head measuring 50cm-54cm. Always take a head measurement. Head sizes and shapes can vary, even within an age range. Using a helmet that does not fit can be dangerous. COMPLIANCE - Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. CONSTRUCTION- Adjustable straps for a custom snug fit, and aerodynamic cooling vents for great airflow. Durable outer PVC shell, and impact dampening expanded polystyrene inner foam construction.