UM-1008 Mask is adjusted to different head sizes by pulling directly on the "fitting ring"; ClearVu tempered glass lens; Pure Silicone Skirt; Round Edge Skirt technology for comfort fit; Easily adjust the strap by "pinch" and "move" motion to adjust strap buckle slider; Fits youth ages 6-12 years old; UN-0102 Snorkel features the Patented Hyperdry Semi Dry-Top Technology; Pure Silicone mouthpiece; Three-dimensional pipe curve for ergonomic fit; One touch adapter that can be easily detached and attached to a mask; Flexible silicone joint reduces strain on the mouth; Comes with a durable, lightweight, and travel-friendly reusable bag