Mares X-Tream spearfishing maskX Tream spearfishing mask with ultra low volume and very wide field of view. X Tream is an ultra light, hydrodynamic and minimalist goggle providing incredible vision . The Mares X Tream spearfishing mask has an ultra low volume to minimize mask compensation during the dive . Both the minimalist design and the reduced hydrodynamic profile work together to reduce drag in the water . The new ergonomic buckles have also been redesigned for better