The most accurate method is to measure the circumference of your head just above the eyebrows and over the temples. You can use a soft measuring tape or something like a string, shoelace, or anything similar that can be measured after the fact. Another option is to use your hat size and to reference the sizing chart.
Using the helmet's adjustment features, open it to the largest setting and position on your head so that the front of the helmet is one finger width above the eyebrows. Squeeze the helmet together so that a comfortable and snug fit is achieved and then lock in the adjustment features.
Check the fit by moving the helmet around with your hands and shaking your head from side to side. It should not move loosely around nor should it have an uncomfortable amount of pressure. A proper fit should be securely snug against the head yet comfortable.
The information below is a general sizing guideline and DOES NOT guarantee fit. The chart is not specific to any item or brand so if a product does have specific sizing guidelines on the product page, DO NOT reference the general sizing guidelines below.
Now that you have found out what size you should wear, check out our quick buying guide below that will help you figure out what level of play best suits your needs!