These aren't simply tumblers; they're night lights as well! Each has both a manual as well as an automatic on/off switch; when you use the latter, the light in the base will turn on when the light in the room is turned off. The light has two settings, and the lid, which has a 360-degree drinking capability, prevents spills and leaks. All this, and dishwasher safe too! There's no better addition to the kitchen than bright, functional tools that will perk up the look and make your life easier at the same time. Zak! Designs has been delighting cooks for years with high-tech and colorful bowls, serving solutions, and utensils. Some are crafted from recycled materials, others from stainless steel, yet all share the same innovative, chic perspective.