Technical details: Material: Food-grade 304 stainless steel (included). Free from plastic, BPA, and plasticizers. Features: Compartments (removable) + silicone sealing ring. Process: Polishing process; Usage: Office, school, hiking, travel, picnic, and other outdoor activities. Advantages: High quality and durability: 100% rust-free, tasteless, food-grade stainless steel (tested by accredited institutions). 100% leak-proof: Two fasteners with solid edges on the side and a silicone sealing ring ensure 100% leak-proofness. Movable divider: Compartments allow you to flexibly separate different foods to prevent food from affecting the taste. Easy to clean: Dishwasher safe. Healthy and environmentally friendly: Free from plastic, BPA, plasticizers, and other harmful substances, reusable and recyclable. Outer matte surface: The outer surface of the bento box is matte, which prevents scratches on the outside. Maintains integrity and a noble appearance. Internal polishing: The lunch box has several exquisite polishing processes and can be cleaned by hand. Important note: - Not suitable for microwave and oven - Before placing the bento box in the dishwasher, remove the silicone sealing ring on the lid to prevent damage. Scope of delivery: 1 X 800 ml stainless steel lunch box