Very nice, and especially with foam which personally seals perfectly for me, and which is rare in the Greek market and has been successfully replaced by the Speedo Sprint Swim Goggle that I have been buying for 20 years, but I could no longer wait for them to come from abroad because I needed them immediately. I remove 1 star because although the seller assured me that they can be used by adults (the same is mentioned on the package), I had to file down the back strap to fit properly. Some stores only mention them as for teenagers. For a male head, it is better to ask about the length of the strap.