These fabulous food containers are perfect to be fitted into a cooler! it matters very little that they are propped vertically inside due to it's leak proof character! it has an easy to "unlock" front Lid! holds up very nicely in the Dishwasher for easy cleaning! These containers are great for making lunches for the week and popping it into the freezer! it's thick walls keep cold items cold and hot items hot! these versatile lunch containers are microwavable for the ideal take out container! stock up on these fabulous lunch box containers with there many excellent Characters! microwaveable! Dishwasher safe! Stackable! fridge/freezer safe! designed to last! BPA free! a must to have in your house, and something that will make your life easier and better in every way! try it once you will surely be 100 percent satisfied.