I’m not sure of the size, but it has to be medium-large, because it fit snuggly on my head and I wear a 16-3/4”-17”! fitted hat

CASCADE CPX-R ADULT LACROSSE HELMET - Has been painted gold with burgundy face mask and cardinal decals applied. Original color is black and can be cleaned up. The gold scratches off. The plastic clamp at the top of the face mask is broken on one side and the chin guard has a crack but it doesn’t affect usage. See pictures for measurements and other condition. Condition is Pre-owned. Shipped with USPS Priority Mail.