I bought this set to go snorkeling in the Badega bay area of sonoma california and I have to say that it has exceptional quality for such a cheaply priced set. The mask is a really high quality mask thats great for kids or adults and it really ajusted well even when I was wearing it.
The mask comes in small, medium, large or extra large, I wear a medium. I absolutely love the snorkel it really doesn't leak and I love how I can swim deep without water getting in my lungs. The mouthpiece is decent and it doe's a great job of staying in my mouth. The other thing I notice is that my mouth never gets tired with this mouthpiece in my mouth.
The fins help give me great thrust when I'm battling the waves in the pacific waters and it really helps make me less tired, the fins are one of the best things in this set.
Overall if you want to enjoy the fun of snorkeling and you need a starter set this is a great set you can start with and not have to worry about the lack of quality.