This lunch bag has both thermal insulation and cooling functions. The inside is made of aluminum material, making it easy to maintain the temperature of your lunch and drinks. It has a zipper for easy carrying and can be used as a lunch bag, for picnics, or as a cooler bag for small shopping trips. 【Color】 Black 【Condition】 There are no noticeable major stains, but please understand that there may be minor scratches due to home storage. It's a size that can fit two standard lunch boxes. Instant purchase is OK.