Gear up with an all-day hydration partner. The RTIC® 30 oz Essential Tumbler is an adventure-ready standout for the office or the outdoors. It boasts double-wall vacuum insulation and a premium ceramic-lined interior to prevent flavor transfer. The leak-resistant double-threaded lid keeps your beverage secure while relaxing by the campfire. To protect the quality of your custom design and keep it looking sharp season after season we recommend hand-wash only.