We wanted to review a generic version to see how it compared to the now-popular Ozark and the legendary Yeti tumblers. Ozark Trail and Yeti both offer two packs in 20 oz and 30 oz sizes. I have been using the 30 oz Ozark Trail tumbler and the 30 oz Yeti Rambler for a true comparison. There is a notch to stop the straw from coming out of the drink but it doesn’t make it leak proof. I like how having this lid adds more versatility to the Yeti and Ozark Trail tumblers. What’s great about this lid is it’s meant to fit a straw as it has a circle opening. Now, to be more competitive with Yeti, they have a wide range of colors and styles. Tumblers enable office workers to enjoy their beverages hot and cold. According to The Wall St. Journal, in terms of maintenance, Yeti Tumblers seem to have an upper hand over its competition as the Yeti is dishwasher safe. We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation. If you don't care about brand names and are pretty careful with spills, I would go with the Ozark Trail tumbler. A petite person or child may find the 30 ounce size to be a bit of a challenge to use. The only complaint I might have is that in the 30 ounce size, both are a bit difficult to grip if you have small hands. I love being able to use the dishwasher to be sure it’s clean and for the convenience.