The Durden RIG (R) Reflect Goggle combines a retro-inspired frame with a modern take, all while providing a maximum field of vision. It is a fairly large goggle with a 1.3 mm thick cylindrical lens, which gives the goggle a sleek, low-profile expression. This model includes our unique proprietary RIG (R) lens technology. The strap is mounted on the outside of the frame, making sure you will get the best possible fit with your helmet. Vent foam is laminated on the inside of the frame which makes it extremely durable. You can easily change lenses, as there is a hook interface on the bottom part of the lens. All goggles are available with our revolutionary RIG (R) lens technology, developed by Sweet Protection to provide superior contrast, minimum color distortion and reduced eye fatigue. Sweet Protection Durden RIG Goggles + Malaia Reflect Lens | Purple | Christy Sports