With the QuikClik Seal feature, lids click into place letting you know when contents are secured. Ridged lids make for easier stacking. Easy-carry handles help prevent drops. The solid seal keeps food in containers and prevents spills. Clear base makes it easy to see what is stored inside. Bases have graduation marks for handy measuring. Containers and lids are BPA-free, and microwave-, dishwasher-, and freezer-safe. Made in the USA. Rubbermaid TakeAlongs Food Storage Container Set, Sandwich, Red, 8-Piece (#7F58).