- 【Material】This lunch bag is made of 300D polyester fabrics, strong and not easy to break. The insulated crossbody lunch bag not only keeps you warm and fresh, but also cold. It will fulfill your meal needs for all day.【Size】The lunch bag with strap measures 8.9 x 10 x 6.5 inch, the space inside can hold enough room to meet our adult lunch, lunch boxes, fruits, snacks, drinks, breads, utensils and