Specification: Material: Polycarbonate, Silicone Dimension:170*18mm Length:32cm(adjutable) Case dimension:185*50*50mm Myopia Degree: -1.50, -2.00, -2.50, -3.00, -3.50, -4.00, -4.50, -5.00,  -5.50, -6.00, -6.50, -7.00, -7.50, -8.00 Features: Superior optical material is perfect for competition or casual swimming Feature excellent resistance to fog, impact and pressure Silicone frames are soft and comfortable to wear Adjustable head strap can meet your needs as its fine elasticity High light transmittance to ensure high definition view Prevent water infiltrate into your eyes effectively Lenses offer ultra wide angle vision Humanized design, fashionable and elegant appearance Package Includes: 1 x Swimming Goggles 1 x Case 2 x  Nose adjuster