The Aphex photochromatic lens allows a change of tint in a few seconds: your lens can change from CAT.1 (white, cloudy day) to CAT.3 (sunshine), and vice versa. A unique screen that covers many conditions, full sunshine or cloudy weather, impossible to go out without it when you have tried it! More respectful of the environment, from now on all our goggles are made of BioBased and recycled materials.