"The strongest and most indestructible two-window mask ever. So durable, we are offering a Lifetime warranty against frame breakage. This strength is the result of an internal frame (we call the subframe) molded directly beneath the surface of the silicon"
- Sub-Frame Two-Windowed Mask
- Low Volume Design
- Wide Field of Vision
- Extremely Durable and Strong Construction, 316-Grade Stainless Steel Sub-Frame