The Kilner storage containers are very good quality and ethical because they are glass. I have a mini fridge from mostly eating fresh foods, not frozen etc .... since this was mostly a bar fridge it did not have a salad tray. I found the two sizes of Kilner storage containers fitted well into the relatively small space and they allow me to keep fresh left over food such as couscous, rice etc, and smaller containers for homemade falafel and hummus. They are also easy to use to take to meal sharings and equal as good looking serving containers. I am delighted with them.