Filled both cups before a six-hour drive and didn't have a single drop leak into the crate, even over bumpy back roads. The funnel makes refilling at rest stops way less messy than the old bowl I was using.
Ruby★★★★★
The no-spill rim actually works—I tipped the whole thing sideways getting it into the crate and nothing leaked out. Refilling mid-road-trip is way less of a hassle now.
Nicholas A.★★★★★
Filled the cup through the funnel opening at a rest stop without spilling a drop on the back seat, which is exactly what I needed. The double diner setup means food and water are in one place, so I'm not digging around the crate for two separate bowls.