Key Features and UsageDesign: These sets typically feature multiple stackable, insulated layers (often three or four) with a shared carrying handle. The specific model shown has a distinctive wood-grain finish accented with silver metallic bands featuring wave-like engravings.Functionality: They are designed to keep food hot and fresh for several hours using double-walled insulation, frequently featuring a stainless steel inner lining for food safety and durability.Versatility: These containers are popular for family gatherings, picnics, and carrying complete meals with separate courses (like rice, curry, and vegetables) in individual tiers