The Julbo Bivouak is the world's first sunglasses
with magnetic protective shields. The magnetic side shields can be added to increase protection against enhanced light reflection on snow and water or remove them for regular use. The Bivouak features a high intensity Spectron lens that provides 5% light transmission rate (Category 4) with added anti-reflective coating and flash finish. The polycarbonate lenses are shock resistant, lightweight, and provide 100% UVA, UVB, and UVC protection.