Helmet Manufacturer Sizing Charts

Equestrian helmet sizing varies across manufactures, so it is a good idea to look at brand specific sizing charts when determining which size riding helmet to order. Most helmet brands offer comprehensive sizing charts to make determining which size your head measurement correlates to simple. We have included sizing charts for top brands here.

Aegis
Helmet Model	Head Circumference (inches)	Helmet Size	Hat Size Conversion
Junior Pony	19 to 21 1/4	XS	6 to 6 3/4
Useppa	20 1/4 to 21 7/8 21 7/8 to 23 1/2	S/M L/XL	6 1/2 to 7 7 to 7 1/2

Charles Owen
Head Circumference (cm)	Helmet Size	Skull Cap Size
49	6	000
50	6 1/8	000 1/2
51	6 1/4	00
52	6 3/8	00 1/2
53	6 1/2	0
54	6 5/8	0 1/2
55	6 3/4	1
56	6 7/8	1 1/2
57	7	2
58	7 1/8	2 1/2
59	7 1/4	3
60	7 3/8	3 1/2
61	7 1/2	4
62	7 5/8	4 1/2
63	7 3/4	5
64	7 7/8	5 1/2
65	8	6

GPA
Head Circumference (centimeters)	Helmet Size
53	6 1/2
54	6 5/8
55	6 3/4
56	6 7/8
57	7
58	7 1/8
59	7 1/4
60	7 3/8
61	7 1/2
62	7 5/8

IRH
Head Circumference (inches)	Helmet Size
20	6 1/2
20 1/2	6 5/8
21	6 3/4
21 1/2	6 7/8
22	7
22 1/2	7 1/8
23	7 1/4
23 1/2	7 3/8
24	7 1/2

Samshield
Head Circumference (cm)	Head Circumference (inches)
52	6 1/2
53	6 5/8
54	6 3/4
55	6 7/8
56	7
57	7 1/8
58	7 1/4
59	7 3/8
60	7 1/2
61	7 5/8
62	7 3/4

Tipperary
Head Circumference (inches)	Helmet Size	Hat Size Conversion
19 1/2 to 19 7/8	XS	6 1/4 to 6 3/8
20 1/4 to 20 3/4	S	6 1/2 to 6 5/8
21 1/8 to 21 1/2	M	6 3/4 to 6 7/8
21 7/8 to 22 1/4	L	7 to 7 1/8

Troxel
Head Circumference (inches)	Head Circumference (cm)	Helmet Size
20	51	6 1/2
20 1/2	52	6 5/8
21	53.5	6 3/4
21 1/2	54/55	6 7/8
22	56	7
22 1/2	57	7 1/8
23	58.5	7 1/4
23 1/2	60	7 3/8
24	61	7 1/2
24 1/2	62	7 5/8
25	63.5	7 3/4

Uvex
Head Circumference (cm)	Helmet Size
52-55	2XS/S
55-58	S/M
57-59	M/L
60-61	L/XL

Curious?
Have you ever wondered how hat sizes are determined? Hat sizes are calculated by dividing head circumference in inches by the value of pi, which is known to be the ratio of the circumference of a circle to its diameter, and which is said to have a value of 3.14. For example, a head circumference of 22 inches divided by 3.14 equals 7.00-or a size 7 hat.

Related Topics:
Helmet Storage and Use
Helpful Tip for Hairstyling
Hairstyles for Competition