Copco 2510-7550 Symphony Double Wall Stainless Steel Travel Mug with Spill Proof Lid, 16-Ounce, Silver Double wall stainless steel keeps drinks hot or cold; holds 16-ounce Easy to use soft-grip flip top Spill-proof, leak-proof lid; non-slip base Ergonomic handle with thumb rest Wash and dry by hand to preserve brightly polished finish