KeepCup 16oz Reusable Coffee Cup. Toughened Glass Cup & Natural Cork Band. 16-Ounce/Large, Press 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 For KeepCup brew we estimate breakeven to be as low as 10 uses. LDPE #4 plug* BPA &amp; BPS free* polypropylene #7 lid Sustainably sourced thermal cork band and antibacterial Tempered glass for durability