Maintain Integrity Of Leftovers With 9" Vented, Hinged Containers. Easily Serve Various Dishes, From Burgers And Fries To Crispy Salads, In Containers You Can Stack To Simplify Inventory. Crush-Resistant Polypropylene Material Accommodates Hot, Cold Or Frozen Foods. Safely Store Leftovers In Your Fridge Or Reheat In The Microwave. Improve Takeout And Delivery Operations With Easy One-Step Closure And Audible Snap.