The Speardiver two window frameless mask is the first of its kind; a frameless mask with two separate lenses. All other frameless masks actually have a single lens, with a piece of superflous rubber running down the middle giving it only the appearance of a two lens mask. Having two lenses means the mask will contour around the divers face, resulting in less internal volume and a better field of vision.
Made entirely from hypoallergenic silicone, the frameless mask is great for those who feel the frame of a conventional diving mask push against some areas of their face, resulting in sore spots. The frameless mask is very soft and comfortable having NO HARD PARTS other than the two tempered glass shock proof lenses and the 3D swiveling strap buckles. The 3D buckles permit the strap attachment point to move up/down & left/right, for precise positioning of the strap on the head without pulling the mask out of position. The strap length is easily adjusted by pressing two buttons. The frameless mask is also a convenient backup mask as it can be folded and kept in a small pocket in a float or BCD.
The mask is available from FreediveStore.com Speardiver Frameless Two Window Mask