One size smaller to start with.
I had some reservations when I read the comments about the fact that they get in when the sun sees them, but I placed an order.
Incredibly comfortable and a big plus are the adjustable straps, especially on the bike and on a rock. They keep the foot stable.
The sun, the sea, and the wear and tear they've endured, I can't describe.
Of course, I have the habit after a visit to the sea to rinse everything with fresh water, including the crocs.
Absolutely no complaints.

I found them even more comfortable than the classic ones. And if the strap of the classic ones is too big, these specific ones solve your problem as they are adjustable.

Don't leave them in the sun when you go for a swim. They shrink! I had that happen and they shrank a size. However, the color was dark. Of course, this is not an excuse for such a clog.

για την τιμή αγοράς τους ( <30€) ήταν κλοπή. είναι πιο "μεγαλόσωμα" από τα παλιά σχέδια διατηρούν όμως το χαμηλό τους βάρος . καλύτερο παπούτσι για παραλία, μέσα στο σπίτι κλπ

Although it is an awesome design and very comfortable when worn, however, it stayed two days in the sun and the next time I wore them, they almost didn't fit me, I mean they got tight....and my disappointment was huge and a shame because the product is genuine.