For best results: (1) Clean the bowl or dog bowl (2) Rinse the inside of the suction cup on the slow basket under warm running water and shake out excess water. (3) Firmly press the suction cup onto the base of your clean bowl and make sure there are no air bubbles. Use for dogs of all sizes: our spiral feeder fits most sizes of dog bowls, but ideal sizes range from 4 cups to 11 cups. Turn your dog bowl or raised bowl into a Slowfeeder dog puzzle and an interactive dog toy. Great alternative to sniff mats for dogs. Helps Healthy Eating: Low feed dog bowls help slow the pace of food which can help with proper digestion, choking and food. Flexible and easy to attach to most dog bowls, our spiral lowfeeder should be added to your dog's daily food. Features: top rack dishwasher safe for best cleaning results . Dimensions: width 12.5 cm, height 6 cm, width of the base suction cups 9 cm. It is not a chew toy and should not be left in dog bowls, especially for aggressive chewers. Please always supervise your pet during use.