Palantic Pink Jr. Snorkeling Prescription Dive Mask & Dry Snorkel Combo Fits junior size from age 7 to 12 or small face adult. Tempered Glasses Fixed size: Unable to do different prescription for each eye. Available lens: -1.0, -1.5, -2.0, -2.5, -3.0 (Spherical) Dry Top Snorkel