We use 18/8 stainless steel (SS 304, food grade). Our thermal bodies are double-walled with vacuum insulation. They also feature an additional copper layer that provides extra thermal insulation between the walls to improve temperature retention.
In some models we add:
- Ceramic interior coating: an additional layer that helps maintain a neutral flavor and makes cleaning easier.
- Silicone anti-slip base to protect the bottom of your Fluye and minimize noise when you put it down.