I bought this mainly for my water bottle since regular cubes never fit through the neck. The four long cubes slide right in, and the silicone makes them easy to pop out without cracking or fighting the tray. The gray marble look is a nice bonus. It's also held up fine in the top rack of my dishwasher, which saves time. Only four cubes per tray, so I sometimes run two batches, but for everyday use it does exactly what it says.