This demonstration video discusses and shows the features of the Ocean Quest Pacific Scuba Diving Mask. The Paficic Mask fits all faces (60-240 lbs). This is only one of a handful of masks that fits almost all faces. The Pacific mask is low volume and is easily adjusted because of it´s integrated, swivel buckles. There is a one-way purge valve, which you simply exhale through your nose and the water drains instantly. It is made of Crystal silicone - The highest grade silicone available for a soft comfortable seal. Comes with a free protective case and a mask strap wrap.