Open Box Sherwood Mako Single Window Mask, GreenSherwood Mako Single window mask Mako s unique construction delivers all of the qualities you d expect in a professional mask, with a lighter more comfortable fit. The Mako strap system attaches directly to the stable subframe and utilizes Sherwood s VPP swivel buckle to evenly distribute contact pressure against the face. The result is unprecedented comfort throughout your dive. Ideal for all diving environments, from tropical to polar. Features