Michael S.wrote a review of Castelli Diluvio C Shoecover 16 on December 9, 2019
Familiarity: I've used it once or twice and have initial impressions
fit is definitely on the small side. purchased for my daughter. She wears 38 shoe. Purchased S/M. Per sizing chart these "should" be fine. they will not fit over her shoes at all. quality seems on par for Castelli but the sizing is way small.