Safety Material : Made of high quality PP plastic material which is food-safe, non-toxic, harmless but durable and recyclable.The raised parts in the bowl separates the food when dogs eating, which slow down its eating speed effectively. Size DesignBowl diameter is 6.6 Inch,bowl Bottom Diameter is 8.1Inch,bowl high is1.8 Inch, bowl net weight is 177g.This slow bowl can hold 400 g of food of dry dog food. The slow feeder dog bowl is better for puppy and Medium dogs.Warm tip:This is NOT a CAT bowl Non-slip Design :There are 4 non-slip mats in the package that can be glued to the bottom of the bowl to prevent the bowl from slipping.4 non-slip mats help keep the bowl in the place while dog eating,both fun and food as your dog forages through the fun patterns with non-slip mats. Easy To Clean: Simply hand wash with soap and warm water to remove any residue.This non slip puzzle bowl can also be cleaned in the dishwasher.The slow feeder bowl has PP coating, it not only save your time but also keeps the bowls clearly.