We used the Triboard brand mask for the first time last February during a trip to Bora Bora and in a word found them to be fantastic. My spouse, who always avoided snorkeling with the old style masked just loved the experience. We were so impressed that as soon as we got back to our home in the Caribbean we ordered 6 so we'd have plenty on hand for use by our house guests. They are available in 3 sizes for adults and 1 for children.