Body Glove Kid's Oasis Mask and Snorkel Combo, Blue Mask Pivot Buckle for Custom Fit Easy Adjust Strap Clip For Easy to Adjust and Lock the Strap Tempered Glass Lenses Meets All ANSI Standards Rubber Facial Skirt and Strap Provides Soft and Comfortable Fit Low Volume Design Large One-Handed Nose Pocket for Ear Equalization Wide Split Style Strap for Better Seal on Face Double Feathered Edge Skirt Snorkel: Purge Valve for Easy Cleaning of Water from the Snorkel Dry Top Design Prevent Water Entering the Tube when Submerged Contoured Tube Design