"Let's wander where the wifi is weak" It’s BPA and lead-free, microwave and dishwasher-safe, and made of black durable ceramic in 11-ounce sizes. The high-quality sublimation printing makes this black ceramic mug the perfect gift for your true coffee, tea, or hot chocolate lover that also loves to hike and go camping and be in the great outdoors. .: Material: 100% ceramic with a glossy finish .: One size: 11 oz (0.33 l) .: Microwave and dishwasher safe .: C-shaped easy-grip handle .: Lead and BPA-free