Swim Gear. Reef Rider Swim Set by Intex. Reef Rider Mask (#55977 & Easy-Flow Snorkel (55928). Hypoallergenic, Thermoplastic rubber facial skirt. Snorkel is configured to prevent water from flowing into the top, allowing the diver to easily swim below the surface. Seals use silicone, ensuring a softer, more form fiitting product that is comfortable and water-tight. Mask contains enhanced glass which is stronger and more transparent than standard models. Latex Free. Age 14+ Packaged in attractive peggable bag. 6 per case.