ScubaMax's Arc is extremely low volume with a small frame which allows the lenses to be close to your eyes to create a wider view. This was achieved by using multiple direct injection techniques to minimize the frame distance. The small frame design reduces resistance in the water. Comes with a skirt mounted all direction silicone buckle system to accommodate all sizes and shapes of the face. Comparable to a frameless mask. Also great for free diving and spear fishing.