The Caffeine Bucket Mug is the perfect mug in which to enjoy your caffeine hit. The word "caffeine" is inlaid in green. Made of porcelain. Fired at a high temperature which gives it a super white finish. Dishwasher and microwave safe. The Word Range Collection is a beautiful contemporary collection of home, table and giftware that retains its charm and tradition alongside its modern, clean design. Hand stamped with a word, recalling classic typewriter lettering. Designed by Keith Brymer Jones. Keith Brymer Jones is a British ceramic designer and maker whose distinctive pieces have graced stylish homes for over two decades.