Quick answer: The Sherwood Macco is a frameless, single-window dive mask sold with a clear or all-black skirt. One window with no frame means an open, uninterrupted view and a low-profile fit.
Frameless masks sit closer to the face and fold flat for packing. The single lens gives you a wide view without a center divider. Choose the clear skirt for a brighter feel or all-black to cut glare for photos.
Test the seal before diving: hold the mask to your face without the strap and inhale gently through your nose. It should stay in place.