Hi Richard, Here's the link https://www.villagehatshop.com/content/38/how-to-determine-your-hat-size.html Size 7 5/8 is an XL. If you need more assistants you can call our customer service and they are more happy to help or you can visit one of our stores. Thank you, Village Hat Shop
Man this was my very first time ever at a hat shop. I got a very nice Stacey Adams. So I do not know. Sorry!!
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