I have several of EB's nylon caps that I love but thought I would try this one based on reviewers' comments and sale price. I have an average size head and usually take a S/M size. This cap is well made and attractive but is too small for me. I have adjusted the back as far as possible and while I can wear it I don't like the way it looks or feels. The best thing I can say is that it will never blow off in a wind! I've worn it dog walking several times but given the low price will probably just donate it or throw it away.