KeepCup 8-Ounce Brew Glass Reusable Coffee Cup, Small, Metal Tough; durable; fully-tempered soda-lime glass; recyclable Bpa free; non toxic; lid manufactured from polypropylene New improved lid with larger drinking hole and inner seal. Meets occupational safety and health standards Dishwasher and microwave safe; lightweight and hard-wearing materials For Keep Cup brew we estimate breakeven to be as low as 10 uses