Using these Stelton Emma cups is a breeze. Just pour your favorite hot drink into the cup and enjoy. Remember, since they're made of stoneware, they can handle hot liquids well, but avoid sudden temperature changes like putting a hot cup under cold water as it might cause cracking. To clean them, simply use warm soapy water and a soft sponge. Don't use abrasive cleaners as they can scratch the glaze. You can also pop them in the dishwasher, but to keep the glaze looking great over time, hand - washing is recommended. And if you're not satisfied, you can return them within 30 days.