Here is an interesting insulated Ther-Mo-Pack, a pre-cursor to the modern thermos! It holds a "Quart Fruit Jar, Keeps Food or Drink Hot or Cold for Hours, Converts Your Empty Fruit Jar into a Vacuum Jar". The Ther-Mo-Pack was manufactured by Lockwood Products of Chicago. It is in excellent condition showing only light indications of use. The Ther-Mo-Pack measures 8 1/2" tall. Shipping will be discounted on multiple orders.