Keystone Uniform Cap Sizing Chart

Sentry Snap Adjustable	Small					Medium			Large			X-Large
Cushion Sweatband	X-Small		Small		Medium		Large		X-Large		XX-Large		XXX-Large
Helmet	Small			Medium			Large			X-Large
Hat Size	6-1/2	6-5/8	6-3/4	6-7/8	7	7-1/8	7-1/4	7-3/8	7-1/2	7-5/8	7-3/4	7-7/8	8	8-1/8
Head Size in Inches	20-3/8	20-3/4	21-1/8	21-1/2	21-7/8	22-1/4	22-5/8	23	23-3/8	23-3/4	24-1/8	24-1/2	24-7/8	25-1/4
	20-1/2	20-7/8	21-1/4	21-5/8	22	22-3/8	22-3/4	23-1/8	23-1/2	23-7/8	24-1/4	24-5/8	25	25-3/8
	20-5/8	21	21-3/8	21-3/4	22-1/8	22-1/2	22-7/8	23-1/4	23-5/8	24	24-3/8	24-3/4	25-1/8	25-1/2