MiiR gives 3% of revenue to trackable giving projects. 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 (MiiR drinkware sold separately). The silicone boot is sized to fit a variety of different MiiR items, such as: 25 oz. Wine (#100337), 16 oz. Travel Tumbler (# 100276), 20 oz. Wide Mouth (#100275), and 23 oz. and 27 oz. Narrow Mouth (#100361 and #100377) bottles. Easy on/off. BPA free. Hand wash recommended. For best results, wash your MiiR product with a long-handled soft bristle brush, soap, and warm water.