Miyoshi Seisakujyo Male Square Lunch Box with Integrated Cooling 11 x 9 x Easy Clip Buckle Storage Microwave Dishwasher Safe excluding White Bear Made

The 'GEL-COOL' series features a cooling gel sealed inside the lid. Simply freeze it overnight in a standard freezer. In the morning, pack your food, then place the frozen lid on top. Remove the lid and microwave! You can enjoy your meal safely and deliciously. Product size: Approximately 11 x 9 x 5.5 cm Capacity: approx. 220ml Product weight: 0.133kg Materials: Body and fasteners - polypropylene, Insulated lid - ABS resin, Gasket - silicone rubber. *Only the body and fasteners are microwave and dishwasher safe. [This product, shipped and sold by Amazon.co.jp, is a genuine "GEL-COOL" product from the manufacturer.]