The Yeti Rambler Mug with Straw Lid is constructed with stainless steel and double-wall vacuum insulation to keep 35 ounces of your favorite beverages icy cold all day long. The elevated handle and cupholder friendly base makes this travel mug extremely travel friendly and adventure ready. The straw lid has a molded-in stopper so your reusable straw stays safely in place. Stainless steel, double-wall vacuum insulationDishwasher safe (lid on top rack, gaskets and straws in utensil basket)Do not use straw lid with hot beveragesCupholder friendly