They are not gummy. They have several layers, nay many layers of boiled wool. I thought that in the beginning they were a little slippery. You could slide on wood floors like you were sliding on ice. They are not slippery like you will fall at least to me they are not. They have aged and gotten less slippery. I love mine because they are very warm and made of natural materials.
Answered on 1/7/2011 12:00:00 AM by Anonymous from Unknown