Miyoshi Seisakujyo GEL-COOL Square Integrated Ice Pack Square Lunch Box M Bento Box Oyster Gray 15 X 9.4 X 6 Cm 400ml 1 Tier Lunch Box for Women and

The "GEL-COOL" series has a cold gel inside the lid. Freeze in a regular freezer overnight. After packing your food in the morning, just set the frozen lid. Remove the lid and pop it in the microwave! It's safe and delicious to eat. Product size: Approx. 15 x 9.4 x 6cm Capacity: approx. 400ml Product weight: 0.202kg Materials: Main body, clasps, and partitions - polypropylene, cold pack - ABS resin, packing - silicone rubber * Only the main body, clasps, and partitions can be used in the microwave and dishwasher. [Shipped by Amazon.co.jp, sold by Amazon.co.jp This product is an official product from the "GEL-COOL" manufacturer. ]