They are amazing. I used to swim in high school and am now 60. I have had many pairs of goggles and none have ever been comfortable and don’t leak. I didn’t think it was possible for me and my face structure to have comfortable goggles. These simply sit on my face and don’t leak!!! I don’t have to squish them on and create suction- I have them adjusted so they are held in place but not tight. They are clear and so very comfortable. They do leave lines but I don’t care. I think at my age the skin will always get goggle lines. I am so happy with these goggles. I only wish I had discovered them earlier.