Waterproof Travel Dog Bowl by Ruffwear. Go mobile. Ruff Wear’s smallest, lightest bowl feeds and waters even large breeds, yet it’s superhandy when you’re on the go. Easily tucks into your pocket for daily walks, running, hiking, and mountain biking. Made of long-lasting and environmentally conscious recycled polyester outer shell. Features a seamless black nylon polyurethane-coated waterproof liner and a stable base that is leakproof and spill-resistant. Compact, lightweight, and collapsible for dogs on the go. Available in 24 oz (5 inch diameter), and 1 qt (6 inch diameter).