A superior mask must provide an expansive field of view and it must keep water out, but most of all, it must be comfortable. The dual lens SYNERGY2 TWIN TRUFIT hits all of these performance targets, but where it really shines is in the comfort department. The key to its comfort can be found in its new- generation Trufit technology skirt, which is actually two skirts. The main skirt offers a thin and soft silicone material for the best possible fit, seal and comfort against the skin. The outer skirt, made with firmer silicone, provides support and rigidity where needed. SCUBAPRO's exclusive Trufit technology can be identified by its distinct ribbing texture.