Regular stainless steel tumblers can sometimes impart a slight metallic taste to your drink - especially with coffee, tea, or acidic beverages. You may not always notice it consciously, but it can subtly affect how your drink tastes.

Metro Café's ceramic coating lines the inside of the tumbler, creating a non-metallic surface between your drink and the steel. This helps your coffee or matcha taste the way it was meant to — clean, pure, and without any off-notes.

As for whether the difference is real - yes, it is especially noticeable for: 

🔹 Black coffee drinkers (no milk to mask the taste) 

🔹 Matcha and tea drinkers (more delicate flavors) 

🔹 People who are particular about how their coffee tastes

Think of it this way: you wouldn't drink coffee from a metal cup. The ceramic coating gives you the insulation of stainless steel without sacrificing the taste experience. That's exactly what Metro Café was designed for — True Taste. Nothing Else.