The PetSafe Healthy Pet Food Station provides your pets with fresh food, whenever they need it. It's the first gravity feed system with a removable stainless-steel bowl, the #1 most hygienic material veterinarians recommend. The hopper is made of BPA-free plastic and locks in place to prevent spills and to help prevent the unit from being knocked over. You'll never have to worry about coming home to an empty dish again. Easy to keep clean, dishwasher safe. Size Medium holds 1.8 kg (4 lbs) of dry food.