Stilo Helmets SpecificationsFounded in 1999 Stilo manufacture high-tech helmets that are distinguished by an excellent communication system perfect noise cancellation reliability and guaranteed performance. The company's philosophy has always been oriented towards the pursuit of the highest level of functionality in the development of equipment for racing drivers.How do I correctly choose the size of my helmet ?Take the measurement of your head circumference above the eyebrows using a measuring tape: this measurement is usually between 53 and 64 cm with an average of 58 cm. If you plan to wear a balaclava this should be taken into account when choosing the size.This reference table will allow you to establish a correspondence between size and head circumference (in cm):