Premium Material Only The exterior of this lunch bag is made of waterproof fabric, which is easy to clean. The interior of this cooler bag is made of food-grade aluminum foil, which can keep warm or cool and keep your food fresh. .Large Capacity Dimension of this lunch bag (LWH): 28.5*18*17.5 cm, which can hold lunch box of 800 ml*3, milk of 250ml *4 and some fruits, meeting your daily needs of carrying food for work, school or picnic. .Widen Hand Strap The 2 strong handles of this thermal bag can be connected with a widen pad with a snap, which can provide you more comfortable carrying experience. .Easy to Clean The lunch is easy to clean, you can simply wipe the inner aluminum foil with a wet cloth. And you can wash the outside fabric with a wash brush, and hang it to dry. Note: Please dont wash it by a machine or wash it with hot water. .Multifunctional Lunch Bag This waterproof lunch bag is convenient to carry to school, work, picnic, camping, fishing trip etc. The inside pocket is for cutlery set, and outside pocket can hold daily gadgets like phone, power bank, cards, earphone, etc. .