Review on Greatever 2021: Foldable Full Face Snorkel Mask for Kids with 180° Panoramic View and Detachable Camera Mount - Anti-Leak & Anti-Fog Snorkeling Gear by Jonah Riggle

Fits my 5 year old son well, great suction but after 15-30 minutes of use my son complained of a headache and difficulty breathing. It was unusual that I bought the same snorkel mask but for adults and I had the same symptoms. We investigated this by learning more about these snorkel masks and found that they can cause headaches, dizziness, and difficulty breathing and more because you start breathing in exhaled air, which is carbon dioxide. It's dangerous, so do your research before you buy.