The Pet Dinette modular serving and storage bowls can be used to serve water and hold a portion of food or stash of treats. It also has the diameter to hold a credit card, license, or spare house key. Not only is it great for walks or hikes, but road trips and plane trips as well. Included is a strong 5-foot nylon leash and two BPA-free, dishwasher safe, food-grade plastic serving/storage bowls. The bowls are strong and sturdy, reinforced with stainless steel, rust-proof screws and a leash anchor.