Finnsub MATRIX KIDS SET The Finnsub MATRIX KIDS SET includes a single-lens mask with a polarizing filter for brighter underwater vision, as well as a snorkel equipped with a floating ball system and wave breaker for added safety and ease of use. Thanks to the mask's polarising filter, the world below the surface is beautifully bright and colourful. The black silicone fits well on the face and is not affected by sunlight. The snorkel can be attached to the mask with a practical holder that is easy to adjust. Finnsub MATRIX KIDS SET