Microwavable Oblong Food Storage Container 2.2L 2 "Not good for using in the freezer" Lyn 11 November 2013 I already had a few of these boxes that I use for general storage and bought half a dozen of a size that was ideal for freezing cupcakes. However today when I took the lid off one of them the lid just broke into pieces. There is nothing to say if these boxes are suitable for freezing but you would think they are. A note from the team Thanks for placing your review. We'#re sorry for the problem, but the storage boxes are designed to go in the freezer. We'll be in touch shortly.