The Windproof BUFF offers the best protection against wind and cold, thanks to the insulating layer of warm air that forms between the skin and the fabric. The Gore Windstopper is a windproof and water-repellent fabric. Ideal for cold temperatures or with a strong wind. Quality: Windstopper material, recycled microfiber, elastane Available sizes: universal. Available colors: Fluo yellow / navy, navy and black.