I can't say enough good things about this 40 oz tumbler! This little gem has become an essential part of my daily routine. Whether I'm sipping my morning coffee or enjoying an ice-cold beverage, this tumbler never disappoints. The vacuum insulation works like magic, keeping my hot drinks steaming for hours and my cold beverages refreshingly chilled throughout the day. I love how it fits perfectly in my car's cup holder, making it an excellent companion on my daily commute. The lid seals tightly, preventing any messy spills, and the durable stainless steel construction ensures it can handle my rough and tumble lifestyle. With its stylish design and incredible performance, this tumbler has won me over completely. It's worth every penny and more, and I can confidently say it's the best tumbler I've ever owned. Highly recommended!