@Michel Thank you for reaching out
We are looking into this right now, it may take a few days for us to track down this information. We are sorry that our product page does not have the correct information. We will get it fixed as soon as we can. When we hear back with the information we will circle back with you here in the community.
Thank you in advance for your patience and for bringing this to our attention!
Hi @Michel - Thanks for your patience while waiting on correct info and for catching that sizing discrepancy! For head circumferences with this hat, the large is 59 cm and the XL is 61.5 cm. Looks like the XL will be the right fit for you. You can also see the product page for the REI Co-op Vented Explorer with updated sizing. Thanks again for working with us on this one!