These slippers are made with a cozy sherpa upper. Rubber gripper sole. This product was made in a factory that runs the Gap Inc. P. A. C. E. (Personal Advancement & Career Enhancement) program. P. A. C. E. is our educational program that helps the women who make our clothes build the skills, knowledge, confidence & resilience needed to advance in work & life. Learn more here. For more fit and sizing info, check out our Size Guide.