Titan Flower Power Princess 11-Vents Protective BMX and Skateboard Helmet, Small Flower Power Princess Pink Skateboard Helmet - Matches Best Selling Flower Power Princess Girls BMX Bike Size Small good for ages 5-10, also includes extra pads that will make the helmet a size small equivalent ABS Plastic Shell with Black EPS Foam Liner; Dual Certified to CPSC and ASTM Safety Standards Adjustable Chin Straps; Colorful and Fun Girls Skateboard or BMX Bicycle Helmet 11- Vents so you stay cool and comfortable while skating, skateboarding, BMX-ing, or bike riding Helmet shell is size 50-52cm and with supplied set of foam pads the size can be reduced to 48-50cm.