Sorry, either you cannot reply to this topic or you have not verified your email address by clicking on the verification link in the email we sent you when you registered. If you did not receive an email from us, or need us to resend it, please visit your User Profile page.
@Princessdrive thanks for the question! Looks like both sizes will technically fit; we'd recommend sizing up, as there's a little more room for adjustment in the M/L based on 57cm. The extra space means more airflow and more room to add a thin cap underneath for additional warmth. Hope this helps!
At REI, we believe time outside is fundamental to a life well lived.