KeepCup 12oz Reusable Coffee Cup. Toughened Glass Cup & Natural Cork Band. 12-Ounce/Medium, Currant Amazon exclusive - garden range - BPA free; non toxic; lid manufactured from polypropylene Tough; durable; fully-tempered soda-lime glass; recyclable New improved lid with larger drinking hole and inner seal. Meets osha (occupational safety and health) standards Microwave safe; lightweight and hard-wearing materials We estimate breakeven to be as low as 10 uses. Assembled in our Los Angeles Warehouse. LDPE #4 plug.* BPA &amp; BPS free* polypropylene #7 lid. Sustainably sourced thermal cork band and antibacterial. Tempered glass for durability.