Fellow never understood why to-go tumblers made design decisions that compromised the coffee drinking experience. The senses–taste, smell, and touch–were ignored, while durability and extreme heat retention were prioritized. Why not both? Introducing a travel tumbler finally worthy of the coffee inside. Designed to amplify the senses and engineered to fit the most popular manual brewing devices, you can now enjoy coffee at its fullest, everywhere. Not dishwasher safe.