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. Make your campfire memories a little warmer with a modern take on Grandpa's old camp cup. Use it for your coffee, tea or your favorite drink you want to keep hot or cold. Thermo 3D ™ Double Wall Vacuum Insulation Technology.