Tifosi's Amok Race Sunglasses feature a bold full-frame design & were created to cater to endurance riders, road cyclers & mountain bikers. Scratch-resistant, shatterproof lenses protect your eyes from the elements while side vents provide the airflow needed to prevent fogging at top speeds. The Larger lenses block more wind & let less light sneak around the frames while ensuring that the frame's edges do not obscure vision. Grilamid TR-90 & Hydrophilic Rubber fuse to create a frame that is flexible & strong with an uncompromising grip while an adjustable nosepiece allows the glasses to be fitted for any face shape. The High Speed Red Fototec lenses allow for Variable Light Transmission, adjusting their darkness to counteract the light level of the environment.