Correct fit and comfort.
The most important thing above all else when choosing your snorkeling mask is making sure it fits correctly and it is going to be comfortable to wear for long periods of time. A good fitting mask will create a complete seal over your face and nose while preventing any water from leaking into the mask while being comfortable and easy to wear at the same time. Everyone’s face is unique in size and shape which can make finding the right mask seem difficult for some people; in today’s market however, there are a wide selection of masks available to make sure you find the one just for you! The best way to check for a good sealing mask is to hold it up to your face while inhaling gently through the nose. If the mask fits correctly, it should stay in place without any problems and without any air leakage. A comfortable fitting mask largely depends on how it fits around your face. The skirt of the mask should surround the area of your face from just underneath your nose to about halfway up your forehead. If the skirt lays too far near your mouth it is too big and will not be comfortable and may not create a tight seal.