Aqua Sphere K180 Swim Goggles Swimmer's Snorkel Set 180-degree panoramic vision, Anatomic lens shape for a water-tight fit 100% UVA/UVB protection, Easy-adjust strap, 3 interchangeable nose bridges, Latex free Center-Mount Design: Relax in the water in order to focus on stroke and improve technique One-Way Purge Valve: Allows for clear and easy breathing Hydrodynamic Design: Worn with swim goggles promotes proper head and body position