Scubapro Steel Comp Freediving Mask - Double Lens (Multiple Colors)The ultimate freediving mask, the dual lens STEEL COMP is particularly well suited to deep diving. It has the lowest possible internal volume so equalizing is easy. Plus, on descents the mask itself compresses, so equalization is not required as often. The skirt is very effective at blocking out light reflection at depth. The soft skirt and rotating buckle system allow for a comfortable, watertight fit on most faces. Features Low internal volume