Men's winter mules from The North Face. Insulated with Primaloft® and ThermoBallTM for exceptional warmth, the 'NSE Tent Mule III' slippers are perfect for camping or home use, and have been constructed with a durable, recycled ripstop upper to withstand rugged environments, water and abrasion. The sturdy tent slippers are complete with a die-cut EVA sockliner and nylon mesh base with plastic lugs for reliable traction on wet or icy surfaces. Signature branding to the outside foot. Upper: Recycled P.E.T. Sole: Nylon Mesh.