As a class, frameless masks tend to be lighter, offer a very low profile and they’re lower in volume. They fold up flat for easier packing, and as we found in this Scuba Lab review, they also offer a wider field of vision.
Anatomy of a Frameless Mask
Throw away the thick plastic frame and attach the buckles directly to the mask skirt. As a result, the lens sits closer to your eyes, offering a broader field of vision in all directions, and with less volume, the mask is easier to clear. They also fold flat for packing and make great backup masks, slipping flat into a BC pocket. For all these reasons, frameless masks have become more popular than ever and companies are responding by offering a growing number of models.