Storage box lid and tray are plastic, free of BPA, security material. The lid is dark green, white tray, a tray with 12 grid evenly distributed, about 3.5 cm length and width of the way, used to freeze baby food supplement but the best friends, a small summer ice is also very convenient. Many small partners very upset how good the frozen ice or food supplement to how it comes out. There is a good way, a good thing after freezing, the trays upside down, which wanted something out of the grid, it is pointed at with a small spoon or other suitable hard object hitting the bottom of a small grid, brush, click on fall out, remember to take a good bowl.