You don't need to own a pair of Uggs to use these fabulous insoles. I put them in all of my boots, and they are exceptional in my cowboy boots. I love how they form to your feet. The fact that they are removable and washable is a bonus.
Just could not get this to work in my ugg boot. Was super excited to put the fur back into my boots so they could go another year. It made them so tight it took all the comfort away.