It's a Mares Star copy and you can get it for like $15 plus shipping.
It's a steal for this price and VERY soft silicone which helps it compress with depth.
There's more volume than my Mystic or a micromask... but a GREAT mask nonetheless for a student, someone on a budget, as a backup or to give to a friend or local while on a vacation at a tropical destination!
They also have another mask called the Blue Isla marketed as low-volume as well.
The same company also sells very inexpensive prescription masks, for those with worse than 20/20!
Look at the softness of the silicone and flexibility / compressibility while I inhale!