Every MiiR product sold helps fund transparent giving projects. MiiR gives at least 1% of revenue to nonprofit organizations whose work empowers communities while benefiting the health of their natural environments. Every MiiR product comes with a Give Code that allows you to experience the story behind your purchase. Flip. Register. Follow. Give your MiiR bottle an extra dose of durability with our silicone boot, designed to add grip and protect against minor dings and dents. Fits Wine (#100337), Wide Mouth (20 oz.) (#100275) and Narrow Mouth (23, 27 oz.) (#100361, #100377) bottles. Easy on/off. BPA free. Hand wash recommended.