Made of high borosilicate glass, with a sealed air gap between two glass layers for thermal insulation.
- Outer wall stays cool even with boiling hot water, no scalding; no condensation on the surface when holding cold drinks .
- Resists sudden temperature changes from -20°C to 100°C, anti-cracking, durable for daily office & car use.
- Most models come with a 304 stainless steel tea strainer, perfect for brewing tea .
I had to sell it because of immediate notice to go back home