This demonstration video discusses and shows the features of the Cressi Matrix Mask. This mask is for medium to large faces (110 lbs+). It has a tear drop lens design for excellent downward vision. The lens angle increases underwater vision by 30%. It is a low profile mask made of crystal silicone which is the highest grade silicone available for a soft comfortable seal. It has a very easy to adjust strap buckle. This mask offers the widest field of vision available today.