The origin of Lunch Cooler Bag came from Brown Paper Lunch Bag. Made of durable Tyvek material resembling the paper factor (IT'S NOT PAPER!); Tyvek is resistant to water, abrasion, and aging. Each Lunch box for Men Women helps the environment by replacing single-use plastic bags and paper bags. The interior is 7.9" L x 6.7" W x 9.1" H to store various container sizes, beverages, fruits, and snacks. With the additional interior pocket, it is also convenient to store keys, phones, card, etc. Simply wipe with a damp cloth and let dry. Do not bleach. Do not use in your washer or dryer. Do not dry-clean or use an iron. Tyvek is a unique lightweight nonwoven material to resemble paper. Wrinkles, creases are normal and provide a stylish authentic look to the Lunchbox