Lekue Penguin Ice Cube Tray, Blue Lekue offers a wide range of rubber ice-cube trays in a variety of shapes and colors guaranteeing perfect results Lekue ice cube trays are manufactured in rubber and are completely flexible, making extraction of ice easy and quick Ice molds can also be used for homemade ice cream and ice molds Suitable for freezer but not oven or microwave safe 8.8 x 4.5 x 1.2 inches hand wash only