Here is a guide to ensure the best fit when choosing your hood.
Measure around the forehead with a tape measure to find the head circumference.
Sizes are in inches and centimeters
Size Small is 19 -20 inches or 47-50cm
Medium 21-23 inches or 52-57cm
Large 23-24 inches or 57-60cm
XL 24-25 inches or 60-63cm