Tupperware Sandwich Keeper(Frog+Penguin) 2pieces Set Keeps sandwiches fresh This eco-friendly, reusable, one-piece sandwich and food container makes school lunches easy and fun. Solid construction prevents crushing! Perfect for school lunches or other meals on the go. Made of polypropylene. BPA free and Phthalate free. Available in 2 fun graphic designs Sandwich keepers are 5"H x 4.8"W x 2"D. Hand washing recommended.