The easy-wearing Spur Mips helmet features our finest performance technologies in a lightweight design with added benefit of Mips, the Multi-Directional Impact Protection System. To keep cruising kids comfortable as they follow in your tracks, the Spur Mips also is equipped with the In Form Fit System and Vertical Tuning for a perfect fit that's easy to adjust, a soft interior that feels great against little cheeks, and Super Cool Vents to allow hot air to pass through. Features: Lightweight helmet is designed to reduce as much energy as possible while meeting and exceeding stringent safety standards Rotational motion can cause brain injuries; with Mips ®, a low-friction layer slides 10 to 15 mm in all directions, reducing rotational motion to the brain during impact In Form Fit System with Vertical Tuning uses an ergonomic adjustment dial and accommodates different goggles and head shapes for a custom, gap-free fit In-mold construction fuses a tough polycarbonate outer shell with an impact-absorbing foam liner, a process that allows for better ventilation systems and a lightweight design Super Cool Vents allow hot air to pass through Soft interior feels great against cheeks Specs: Best Use Snowsports Helmet Style Snow Helmet Construction In-mold Shell Material Polycarbonate Head Circumference XS: 19.1-20.5 inches S: 20.5-21.85 inches Vents 8 Visor/Brim No Weight 12.7 ounces Gender Kids' Giro Spur Jr Mips Kids' Snow Helmet