Can I put my RTIC tumbler in the dishwasher? How do I clean my RTIC Tumbler? Do NOT place in dishwasher. Hand wash only. Wash thoroughly before initial use.
Why are tumblers not dishwasher safe? Insulated Mugs & Cups
Your favorite and most trusted travel mug might not be airtight after a couple of visits to the dishwasher. The same goes with plastic or metal insulated cups. The insulated airspace that keeps your hot or cold liquids gets compromised and loses efficiency.
Can a yeti tumbler go in the dishwasher? YETI Tumblers can handle the wild. But can you put a YETI in the dishwasher, too? You bet. Legendary YETI durability doesn’t stop inside your dishwasher; thanks to rugged 18/8 stainless steel construction, your YETI cup is safe and sound.
Why are Yeti tumblers not dishwasher safe? It was believed that the intense heat inside a dishwasher might be enough to damage the vacuum seal. This is the main reason why Yeti strongly recommended against putting their tumblers in dishwashers. However, for the longest time, Yeti users would still throw their tumblers in a dishwasher.