Thermochromic Heat Sensitive Paper changes color when its temperature changes. Color change will occur within the temperature range of 31 degrees C (88 degrees F) to 37 degrees C (98 degrees F), even from the heat of your hand. As you hold the paper in your hands, your body temperature warms the paper, and its color will begin to change or disappear. Remove the heat source, and as it cools, it changes back.

Paper size is 8.5″ x 11″ per sheet. This paper will accept most types of printing including photocopier, laser, ink jet, pen or pencil. The heavy weight paper is thermochromic on one side only, glossy on the back. Each package contains 24 sheets in four pastel colors, 6 each in purple, blue, green and pink.

This paper is great for printing bookmarks, class handouts or anything you want to give some extra flair. For more pronounced results, consider cooling the paper first. Note: The glossy Heat Sensitive Paper may not feed properly in Ink Jet Printers.

Store out of direct sunlight and this paper will be heat-reactive for years.