Twisty feeder stays where it is and so your pet can apply as much pressure as it likes to the bowl without having to chase it around the floor, allowing it to get every last tasty morsel of food. Plus, with Twisty Dish you never need to worry about accidentally knocking over a bowl full of pet food that can cause a sloppy mess or, with dry food, roll across the floor and settle under furniture and kitchen units to become food for mice and other pests. .PSK pet water bottle is suitable for a lot of occasions, like outdoors, car, office, etc. You can use it while walking,hiking,traveling. You have no need to worry that the dog will drink dirty water outdoors ,it will effectively protect the healthy of your dog..