One of our favorite slippers, the Cozy is lined with fluffy, soft wool and is super easy to slip on and off. It also features an ultra-light sole that travels both indoors and out, so your little one can wear it around the house, out to lunch, or around town on errands.Treadlite by UGG™ Proprietary compound which increases cushioning and traction for a supremely lightweight, ultra-durable sole.