THESE ARE AWESOME! SEE THE VIDEO! Roughneck Vacuum Sealed Copper Insulated Stainless Steel "Koozie" - Keeps Bottles & Can Drinks ICE COLD for HOURS! SEE THE VIDEO! - Order 6 or more for just $3.99 each! We compared these to the $30 Yeti version, and they worked exactly the same! SHIPS FREE!
- Roughneck insulated cups keeps drinks hot for 7 hours or longer and cold drinks cold for 18 hours or longer
- More value for your money and your drinks stay enjoyable to drink longer
- Why does it work so well? Double layer stops heat transfer from conduction, Vacuum insulation stops heat transfer from convection and reflective copper stops heat transfer from radiation.
- Dishwasher safe means it's convenient to clean