7iDP Helmets Size Charts

7iDP helmets are designed to fit snug and secure when properly sized. For additional guidance, refer to our helmet sizing guide or contact our customer service team.

Jump to Size Chart
Adult Full-Face Helmet	Adult M2 Helmet	Adult M5 Helmet
Youth Helmet

Adult Full-Face Helmet

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Size	Circumference (in)	Circumference (cm)
XS	20.75-21.25	53-54
S	21.25-22	55-56
M	22.5-22.75	57-58
L	23.5-23.75	59-60
XL	24-24.25	61-62
2XL	24.8-25.2	63-64

Adult M2 Helmet

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Size	Circumference (in)	Circumference (cm)
XS/S	20.5-21.75	52-55
M/L	22-23.25	56-59
XL/2XL	23.75-25	60-63

Adult M5 Helmet
Size	Circumference (in)	Circumference (cm)
S/M	21.25 - 23	54 - 58
L/XL	23 - 24.5	58 -62

Youth Helmet

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Size	Circumference (in)	Circumference (cm)
M	18.8-19.6	48-50
L	19.6-20.5	50-52

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.