FAMOUS AIRTIGHT SEAL: Tupperware is widely recognized for their quality seals. Both airtight and watertight you can confidently store your food. Airtight seal keeps food fresher for longer. MODULAR, STACKABLE DESIGN: Save space in the fridge and in the cupboard! Cups can be nested when not in use. SPILL-PROOF: Liquid-tight seal of the bowls locks in freshness and allows you to not only store liquid food items but also carry with you during travel. SNACKS: Neatly store or refrigerate snacks like granola, yogurt and washed fruits & veggies. SET OF 3: Great for stacking, storing and packing snacks for picnics, the office and school BPA FREE: Safely store your food with no leaching DISHWASHER SAFE