IRH Helmet Fitting and Sizing Chart
It is important to get the right fit for your helmet, so trying one on with your hair styles the way you will be wearing the helmet is the best way to make sure it fits properly. If you are unsure of your helmet size, you can get a rough idea of what size you will need to order by measuring your head with a cloth measuring tape.
Begin by placing the tape measure around your head just above your eyebrows. Convert the resulting measurement in inches or centimeters to the sizes listed on the chart below or download PDF.
Each helmet style will fit a bit differently, but the variety of liner sizes for the IR4G and XLT should give you options to get the most comfortable shell and liner combination for the best fit.