WRSI Current Helmet, Vented, YellowPRODUCT INFO The helmet is low profile and lightweight. Designed by the Whitewater Research and Safety Institute for superior performance in fast moving whitewater. Key Features: Four Layer design: outer shell, energy absorbing foam Energy dissipating inner shell, energy absorbing foam Comfort Ergonomics Durable Outer Shell Patented Retention System 2 Sizes Multiple Vents Size: Small Medium Sizing Info: Head Circumference: 48 55 cm Color: Yellow