Made of environmentally friendly TPE materials, BPA free and Lead-free, odorless, durable and friendly. Very safe for your lovely pet to use. The collapsible dog bowls are great pet travel bowls, lightweight and easy to carry with climbing buckle. It can attach to belt loop, backpack, leash or other locations. Suitable for outdoor activities.They also can be used as indoor dog / cat food bowl. It is 5.1 inches wide, 2.1 inches height, each bowl holds up to 12 fluid ounces of water or 1.5 cups of dog food. - 0.5 inches when compact -simply Pop-Up and then fold away, which are perfect for traveling, hiking, camping and outdoor.