Lacrosse Hockey Helmet Sizing Chart

Helmet SizeHead Size (circumference in inches) X-Smallup to 21 1/4" Small21 1/2" to 22 3/8" Medium22 3/4" to 23 5/8" Large23 3/4" to 24 1/4" X-Large24 3/8" and up.

Cascade, Brine, Cooper, Bauer helmets all run about the same, and are adjustable. I hope this helps!