Strawhat Dog Food Slow Feed Bowl Material: Melamine Resin Helps reduce the risk of Gastric Dilatation-Volvulus (GDV or 'Bloat') Slower eating makes an animal feel more full and reduces instances of 're-eating' With the rubber tape in the bottom, anti slip and avoid noise This product has 3 size, S, M, L, please check the size detail in the photo to choose the right size for your pet