Giro Helmets Size Chart

Giro Helmets Size Chart

Small = 51 – 55cm / 20 – 21.75in.

Medium = 55 – 59cm / 21.75 – 23.25in.

Large = 59 – 63cm / 23.25 – 24.75in.

Universal Fit Adult = 54 – 61cm / 21.25 – 24in.

Universal Fit Women = 50 – 57cm / 19.75 – 22.5in.

Universal Fit Youth = 50 – 57cm / 19.75 – 22.5in.

Toddler = 48 – 52cm / 18.75 – 20.5in.