Helmets by Pro-Tec. Details:One of the best action sport helmets around and a consistent top choice by skaters everywhere, the Pro-Tec Classic Skate Helmet will defend against the bumps and falls that happen while shredding it in the skatepark! This professional quality helmet for skating and other action sports delivers on 40 years of listening to skaters all over the world and using the latest technology to create the greatest protection available. With a high-density, injection-molded PE shell and 2-stage inner foam liner, the wearer can be confident that this helmet will absorb low impacts with ease. A plush wrap on the liner wicks away moisture to prevent dripping sweat on the wearer, allowing greater focus and comfort, while 11 large vents improve flow-through air channeling to keep the wearer cool during intense activity. X-Small size helmet fits head circumference of 20.5-21.3 inches (52-54cm) and includes an adjustable chin strap for optimal fit.