Brand new, unused. Easy to clean and hygienic. No need to worry about thawing time! Just place and thaw. Thaws quickly! Made of aluminum alloy with high thermal conductivity, the bottom surface is uneven with grooves to increase the contact area with air and water, efficiently absorbing and releasing cold air for rapid thawing. 【Also cools down stored rice quickly】Great for "cooling down" rice cooked in a rice cooker before wrapping and storing in the freezer! If you're making a lunch while placing it on the plate, you can cool it down at the same time, which helps prevent food poisoning and saves time. When you want to quickly cool down fish sashimi or dessert, simply place the plate in the refrigerator for rapid cooling.