PROPER PORTIONS- The Large Fun Feeder Slo-Bowl holds up to 4 cups of dry kibble, the Small holds 2 cups & the X-Small holds 3/4 cup. All Fun Feeders work great for dry or wet food diets. NON SLIP BASE & FOOD SAFE MATERIALS - Fun Feeder Slo-Bowls won't slip or slide & are made with food-safe materials that are BPA, PVC & Phthalate free. Made with high-quality, food-safe ABS plastic. VETERINARIAN RECOMMENDED -Vets recommend Fun Feeder Slo-Bowls to aid in digestion and help prevent bloat.Lead free. IMPROVES DIGESTION - These dog bowls naturally improve digestion by allowing dogs to forage for their food through the fun patterns and mazes. PROMOTES FUN HEALTHY EATING - Fun Feeder Slo-Bowls help dogs eat up to 10X slower.