Coolmasc Ski Mask Cover Tebeo. It fits almost all ski goggles. Material: Made from plastic from recycled bottles, 83% RPET polyamide and 17% spandex. Machine washable, gentle cycle. Use it to clean and protect your goggles. Easy to put on and take off. Eco-friendly product. The primary goal of producing and using RPET is to reduce climate impact by transforming our household waste into raw materials for the textile industry. RPET is therefore recycled but also infinitely recyclable. It is recognized as a truly eco-designed fabric.