Ultra-Cold Frozen Rice Container Small, 4 pieces [Microwave Heating Time Guide] Small serving (approx. 100g): Approx. 2 minutes 20 seconds at 500W Material Details / Material: Polypropylene Heat resistance: Approx. 140°C Cold resistance: Approx. -20°C Capacity: Approx. 160mL Size: Approx. 124 x 46 x 72mm Country of origin: Japan Although it has only been used a few times, there is no feeling of use. For those who understand that this is a used item, thank you. Small serving, small amount, small, rice storage container, frozen rice container, rice storage container, rice, frozen container, frozen lunch box, easy to wash, freshly cooked, divided, dishwasher safe, microwave safe, microwaveable, stylish, simple, frozen storage, made in Japan