I bought this mask for snorkeling, and added stock corrective lenses to it. It was super-easy to install the corrective lenses myself.
It's a great mask. The mask is very comfortable and provides a huge field of view because the lenses are quite big. I have a 2mm-long beard and moustache and this mask seals perfectly in spite of that stubble. Some other masks I have used have not sealed as well as this one over the stubble.