Hollis M3 Dual Lens Scuba Diving MaskThe Hollis M3 Dual Lens Scuba Diving Mask delivers distortion free vision and a secure, comfortable fit for divers. Its low profile design uses a rigid frame and two UltraClear glass lenses. The low iron content in the lenses provides higher light transmittance and reduces the green tint commonly seen in some masks, helping colors appear more natural underwater. Compatible with scuba and diving gear needs, this mask features a frameless 100% pure