- Made of food-grade silicone, non-toxic and odorless. Includes a 4-pack for versatile use. - High temperature resistant and compatible with cold and hot storage. Safe for use in the refrigerator, microwave, and dishwasher. - Fully collapsible design: can be folded to 1/3 of the original size when not in use. The three sizes of lunch boxes can be stacked together for compact storage. - Microwave ready: the clip lock on the lid can cover the food, and the air valve on the lid works as an exhaust vent to release steam. - Easy to clean and maintain. Ideal for food storage and everyday use. Convenient to carry to the office, camping, hiking, picnics, and other activities. Use scenarios - Office lunch and meal prep: prepare in advance, store in the fridge, reheat in the microwave using the clip lock to cover the food, and collapse the containers for compact transport. - Outdoor activities: take snacks or meals on camping trips, hikes, or picnics. The stackable design saves space in bags, and the vented lid helps manage steam when heating. - Home organization and portability: use for portioning meals, storing leftovers, or packing lunches for family members, with easy cleanup and space-saving storage.