I've never liked those traditional snorkeling masks, cause It was very hard for me to breath under the water. I was a little bit afraid, that this mask won't seal enough to my face and I will choke with the water. I was wrong... there was no leaking at all! I chose the classic M size and it matched me and my boyfriend perfectly. I felt very safe with this equipment! The panoramic view was truly amazing, especially in the clear, calm water. The fins were a good match too (7-11), but I found them a little bit too stiff on my feet.
Honestly, I can recommend this set!!! This is a great experience for everyone. Just make sure you have two sets, cause I was constantly arguing with my boyfriend whose turn is it.