Micro’s quality branded helmets are specially designed for scooting. Bike helmets often do not have the protection for the back of the head that our Micro scooter helmets have due to the need to angle the head back when riding a bike. These durable helmets feature an injection-molded ABS shell over a shock-absorbing liner for high-impact protection. A spin dial and adjustable straps ensure a perfect fit,while multiple air vents help you keep your head cool.   Show the World you ride a Micro! Micro Brand Helmets are Safe, Smart and Stylish and now available in a variety of colors and patterns. The Micro Helmet comes in: Small: 48-53 cm  (ages 2-4 years) Medium: 53-57 cm (ages 5-9 years) Micro’s quality branded helmets have the following features: Rugged & Durable ABS Outer Shell Fully Adjustable Straps Quick-Release Buckle Aerodynamic Design With Air Flow Vents Complies with ASTM standards for Bicycle Helmets as required by the U.S. CPSC