The SeaDive Premier Line of masks is comprised of the same popular models as the RayBlocker HD® and the True Color™ collections but with a traditional clear glass lens. The SeaFire is the favored mask for freedivers due to it low volume. The amazing low volume of this mask is achieved using “single-shot” technology. Rather than use a traditional “snap-together” frame, the SeaFire mask uses an internal frame to keep the volume low and keep drag to a minimum. Since the lenses are located so close to the eyes, the peripheral vision is outstanding. Swivel buckles are integrated into the mask frame.