Review on 🤿 QUWIN Full Face Snorkel Mask - Latest Dry Top System, 180 Degree Panoramic View, Anti-Leak & Anti-Fog Technology - Detachable Camera Mount - Ideal Snorkeling Mask for Adults by Ken Hamdan

I bought 4 of these for our family vacation. We went with another family who were doing the same. So we had a total of 8 people. Our ages range from 15 to 47 years old. We are all healthy and active, we are not overweight. We all had the same problem with this mask style. When you swim aggressively and exert yourself, you feel like you're hyperventilating. Just not enough oxygen. You seem to be getting about 25% of what you need to breathe. When you finally relax and walk at a leisurely pace, the masks work well and the field of vision improves. If I had to buy masks again I would go back to the standard style