Made of BPA-free, food-grade silicone and safe materials, this container is non-toxic and tasteless for reliable use. Key benefits - Collapsible and space-saving: folds fully to one-third of its original size; all sizes stack together for compact storage. - Durable and versatile: resists deformation and melting; suitable for refrigerator, microwave, and dishwasher use. - Microwave ready with venting option: clip-lock lid seals food, and an air valve on the lid provides an optional vent when microwaving. - Easy to clean: dishwasher-safe and simple to wash by hand. - Portable and practical: ideal for food storage and easy to carry for office, camping, hiking, picnics, and other outings. Specifications and features - Material: food-grade silicone and safe materials; BPA-free, non-toxic, tasteless. - Size and stacking: available in multiple sizes that stack together for efficient storage. - Temperature and appliance compatibility: designed for use in refrigerators, microwave ovens, and dishwashers. - Purpose: optimized for storing, reheating, and transporting food with secure lid and optional vent. Use scenarios - Office lunch: store prepared meals, reheat in the microwave, and keep foods fresh at your desk. - Camping or hiking: lightweight, collapsible container that saves space and is easy to carry. - Picnics or travel: stackable sizes for varied portions, keeps food organized and portable. This description stays true to the product’s brand, specifications, models, and functions while presenting clear, customer-friendly benefits and practical use cases.