I've been using the plastic ice cube trays for years now and they just aren't practical they always seem to break when you're trying to get the cubes out which isn't good. I was looking for an alternative and came across these silicone ones so I ordered them and I wasn't disappointed at all they are fantastic and a game changer. Each ready holds alot of water or whatever liquid you want to out into it and they are super easy to get back out no breaking the try just push the bottom and they are out easy.