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Size Chart - Leatt - Helmets

ADV Helmet

Size XS S M L XL 2XL
CM 53–54 cm 55–56 cm 57–58 cm 59–60 cm 61–62 cm 63–64 cm
Inch 20 3/4”–21 1/4” 21 5/8”–22” 22 1/2”–22 3/4” 23 1/4”–23 5/8” 24”–24 1/2” 24 3/4”–25 1/5”
Shell S S M M L L
EPS S S M L XL XL
Liner XS S M L XL 2XL
Cheek Pads 40 mm 30 mm 35 mm 30 mm 35 mm 30 mm


Moto Helmet – 9.5 / 8.5 / 7.5 / 2.5

Size XS S M L XL 2XL
CM 53–54 cm 55–56 cm 57–58 cm 59–60 cm 61–62 cm 63–64 cm
Inch 20 3/4”–21 1/4” 21 5/8”–22” 22 1/2”–22 3/4” 23 1/4”–23 5/8” 24”–24 1/2” 24 3/4”–25 1/5”


Moto Helmet – 3.5

Size JR M JR L XS S M L XL 2XL
CM 51–52 cm 53–54 cm 53–54 cm 55–56 cm 57–58 cm 59–60 cm 61–62 cm 63–64 cm
Inch 20”–20 1/2” 20 3/4”–21 1/4” 20 3/4”–21 1/4” 21 5/8”–22” 22 1/2”–22 3/4” 23 1/4”–23 5/8” 24”–24 1/2” 24 3/4”–25 1/5”


Cheek Pads – 9.5 / 8.5 / 7.5

Size XS S M L XL 2XL
MM 35 mm 30 mm 35 mm 30 mm 35 mm 30 mm
Helmet Size XS / S XS / S M / L M / L XL / 2XL XL


Cheek Pads – 3.5

Size YM YL XS S M L XL 2XL
MM 55 mm 50 mm 50 mm 45 mm 40 mm 35 mm 40 mm 35 mm
Helmet Size YM / YL YM / YL XS / S XS / S M / L M / L XL / 2XL XL


How to Measure

Measurement Instructions
Head Circumference Wrap the tape measure around your head. Position it so the tape is horizontal to the ground and sits just above your eyebrows.