Shop Grey Mens Nuptse Mule Slippers – Shoebacca。The North Face Nuptse Mules offer the perfect blend of warmth and comfort for indoor or outdoor relaxation. These slip-on shoes feature a durable, water-repellent recycled P.E.T. ripstop upper with iconic baffle construction inspired by the Nuptse jacket. Insulated with 550-fill goose down, they provide exceptional warmth while remaining lightweight. The collapsible heel allows for easy on-and-off, and the high-traction rubber outsole ensures a steady grip on various surfaces. Finished with a bold logo print on the vamp and a webbed pull tab for convenience.