The thick-wall glass of the Lixit Bird Deluxe Glass Water Bottle 16oz has a special, no-leak seal design. The non-toxic stopper and stainless steel, double ball-point tube keep water fresh, clean and sanitary. No more messing with evaporation and messy bowls. The stainless steel holder is easy to install and fits most cages. All parts of this water bottle are dishwasher safe. Designed for birds, but it can also be used for puppies and other small animals.