Each plastic lid has a rubber gasket and four latches, which makes them completely airtight and securely fastened for optimal food freshness and protection against leaks. It also suits for taking lunch on the go and packing snacks for kids You can use this set for storing, freezing, reheating, and serving. 100% Brand new and high quality COLLAPSIBLE for EASY STORAGE - Rectangular food containers for meal prepping collapse to 1/3 their size with nesting design for maximum organization. Fits into almost all kitchen and pantry compartments or any cabinet or drawer dwt: Style: Traditional Chinese Pattern Type: Solid Material: Silicone Technique: Frost Model Number: Number of Users: 1 Certification: CIQ Feature: Eco-Friendly Dinnerware Type: Dinnerware Sets Production: Dinnerware Sets Place of Origin: Zhejiang China (Mainland) Quantity: 1pc Folding Food Storage: Lunchbox Bowl Package Including 1PC