great way to add warmth an existing pair of slippers

When you look at the image of these insoles — what-you-see-is-what-you-get. These insoles are one layer wool on top of a paper-thin bottom layer of insulate. I slid them into a size 10 slipper that had worn out outlining. The slipper insoles fit perfectly, there was no need to cut. They evened out the bottom so the slipper was she was once again comfortable and now much warmer. 

These are a great way to add warmth to an existing pair of slippers or shoes. But do not expect them to have any support or padding. And as lightweight and thin as they are, It will be interesting to see how long they last. I have no expectations.