Cylindrical lens for EDGE sunglasses with REACTIV Photochromic technology. Photochromic lens (Cat. 1 to 3 - visible light transmission: 13% - 72%), it darkens or lightens depending on the light intensity, adapting to changes in terrain contrast. NTS (Non Temperature Sensitive) technology: the lens darkens and lightens based on light intensity, regardless of temperature.External oleophobic coating: prevents dirt build-up and promotes water runoff. Perfect relief reading. Suitable for demanding terrain. Ideal for cross-country skiing and mountain biking. External Flash Colour: Blue | Vision Colour: Pink