Walking Earth 30 Ounce Insulated - Travel Tumbler Model BAR001: Stainless Steel Vacuum-Sealed Cup Keeps Drink Cold 24 Hours or Hot 6-8 plus Lid and Cloth Invest yourself - profit is guaranteed - pleasure, full control, saving time and money, it's an investment that returns within two days. Make a Call - Put in the basket. The Walking Earth 30 ounce tumbler is, by far, the best tumbler I have purchased! When the seller describes it as 'vacuum' that is exactly what the lid is. Comparing to other tumblers that I have, or have seen, this lid fits the tightest giving it that vacuum. I was skeptical at first but it is as good as my Yeti. The cup is great. It kept my coffee hot for several hours yesterday. The lid fits tightly and did not leak. The cup fit nicely in the cup holder in my car. The 30oz cup was bigger than I expected, but hey, that just means more coffee and more coffee means everyone is happier, Love this cup. The lid fits nice and tight. I bought a different brand and every time I pick up the cup the lid comes off so I really love the tight fit with this cup! This cup is EXACTLY as the seller described and it keeps ice and your drink cold the whole day, Keeps drinks cold for a long time, even after the ice has disappeared. Works as well as the over priced name brand tumblers. Bought these as gifts for my kids who camp and hike, the Item description was accurate and this arrived on time with No issues! Everything was great! Good follow up after purchase! I love this mug so much I bought a second one for home. I believe this company to be a great and reputable company who sells top quality merchandise who will stand behind their products.