Crystal from House Doctor is an ice cube tray that gives you perfect, square ice cubes every time. It is made of silicone which is flexible and lets you pop out each cube without any effort. There is no need to hold it under the water or wait a few minutes, unlike a regular plastic tray. The tray holds ten square ice cubes and comes in handy for dinners, parties and everyday occasions. Thanks to its versatile grey colour, it suits any kind of style.