The Rambler 30oz Tumbler is designed to withstand any journey with its durable stainless steel construction and double-wall vacuum insulation that preserves your drinks temperature wherever you are. Featuring a magnetic Magslider lid, it offers added protection to keep your beverage secure and maintain its temperature. Both the tumbler and lid are dishwasher-safe, making cleanup simple. While the Magslider helps reduce spills, it is not completely leakproof. Trust the Rambler 30oz for dependable performance on all your adventures.