Ideal for sharing with a partner or friend, or just making sure you always have a mug when you need one, this sleek 2-pack of Contigo West Loop 2.0 Stainless Steel Travel Mugs provides mess-free sipping on the go. Drink with just one hand during your commute or at the job. A lock button and patented AUTOSEAL technology deliver the leak-proof and spill-proof performance you demand. Just hold the button down to drink; the lid closes between sips when you release it. When you're done, the lock button secures your mug for leak-proof travel. Vacuum-insulated stainless steel keeps drinks hot for up to 5 hours, cold for up to 12 hours, and looks sharp doing it. Done for the day? No hassles here. The underside of the lid opens for easy washing, so you never have to wonder if your mug is truly clean. Lid is top-rack dishwasher-safe. Set includes two 16 oz. travel mugs. Limited lifetime guarantee (only applicable in US & Canada. See GoContigo.com for details).