Scubapro Flux Twin - The perfect mask for divers who use optical lenses to improve their underwater view. The attractive low-volume dual lens FLUX TWIN comes with a strong, impact-resistant polycarbonate frame to withstand lots of use and abuse.   The hypoallergenic, silicone skirt features a double-feathered edge to provide a comfortable, watertight seal on a variety of face shapes. The non-slip strap and easy adjust buckles let you dial in the perfect fit.   A wide selection of optical lenses are available, ranging from (-1.0) to (-8.0) in 0.5 diopter increments. Please indicate your requirements in the text boxes above. Also check out  the variety of diving mask we carry visit : https://gs-diving.com/masks/ Also check out Dive Singapore for the variety of gears we carry visit : https://www.divesingapore.sg/product-category/scuba-equipments/