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Take a look at the RA Cycles Top Road Bikes for 2025

KASK Defender Sizing

Size
Head Circumference
S
55-56cm / 21 21/32 - 22 3/64"
M
57-58cm / 22 7/16 - 22 53/64"
L
59-60cm / 23 15/64 - 23 5/8"
XL
61-62cm / 24 1/64 - 24 13/32"

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