Schwinn Varsity Microshell Adult Bicycle Helmet: * Helmet Type: adult bicycle helmet * Safety Features: dial-fit retention system allows for easy adjustment * Removable visor protects you from the elements * Dual-stitch straps are soft to the touch * Rear exhaust ports enhance air flow * Ventilation: 20 flow vents * Design: red, white and gray stripes * CPSC approved * Fits Head Circumference: 22.83 inches to 23.62 inches