There's a reason why Stanley calls this mug "Legendary"! It boasts excellent double-wall vacuum insulation so that your favourite drinks stay hot or cold for longer. The secure Tritanâ„¢ lid prevents splashes, making it easy for you to sip in the kitchen, on the job, or around the campfire. This mug keeps drinks hot for 1 hour, cold for 2 hours, or iced for 10 hours and is made from BPA-free 18/8 stainless steel. It features double-wall vacuum insulation, a drink-through Tritanâ„¢ lid, and is dishwasher-safe.