Cressi F 1 Small mask The F1 Small is loved by snorkelers for their low-profile and comfort. The masks design features a silicone, double-feathered edge skirt attached directly to a single tempered glass lens. The low internal volume allows for effortless clearing. Easy-adjustable buckles are molded directly to the frame. The easy-access nose pocket can be used with one hand for proper ear equalization. The single lens design offers a wide field of view. The mask has a wide, split-mask strap design for comfort and to even tension on the head. The mask is ideal for open water-diving, snorkeling, and more.