KeepCup The Worlds First Barista Standard 12-Ounce Medium Reusable Cup, BPA Free, Mocha KeepCups fit under the group heads of most espresso machines (not large) and they do not require heating prior to filling Splash proof, sealable lid and plug for sipper hole, meets occupational safety and health standards Manufactured from polypropylene #5 - the safest food grade plastic; BPA Free; Non-toxic Dishwasher and microwave safe; lightweight and unbreakable Thermal - keeps coffee hot 20 to 30-minute longer than disposable cups