Every MiiR product sold helps fund transparent giving projects .Every MiiR product comes with a Give Code that allows you to experience the story behind your purchase. Flip. Register. Follow. The bottle keeps your favorite drink at its ideal temp. Optimal size opening eliminates face splashing and fits standard ice cubes. Thermo 3D Double Wall Vacuum Insulation Technology – Keeps your drink hot up to 12 hours and cold for 24 hours. Hardshell Powder coat prevents peeling. Hand wash recommended.