KeepCup BOPU08 Brew Glass Reusable Coffee Cup, 8 oz/Small 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 Swivel plug LDPE #4* BPA &amp; BPS free* polypropylene #7 lid Tempered glass for durability Thermal non-slip silicone #7 band