Clear, smooth-wall design enables easy order recognition. Tight, leak-resistant seal protects contents from contamination and helps prevent messy leaks and spills. Exceptional temperature resilience enables use in freezers, refrigerators and microwaves. Stackable, nest-style storage helps you make the most of your workspace. Food Container Type: Base; Material(s): Polypropylene; Material Type: Plastic; Interior Volume Capacity: 12 oz.