[Material Description] Nylon (100% polyester fiber) [Size Description] S: width 27cm* thickness 14cm* height 28cm M: width 29cm* thickness 16cm* height 30cm [Packaging size] S: 31*32*5.5cm M: 33*32*7.5cm [Product Description] This lunch bag has a main bag, with a surface layer of Gucci nylon fabric, a middle pearl cotton, and a high-quality thermal insulation aluminum film inside, which plays a good role in heat insulation and heat preservation, does not occupy oil stains, and can be wiped; the powerful women's lunch box is equipped with a detachable and adjustable shoulder strap, designed to free your hands and make you unstoppable. Simple appearance, zipper opening, easy to open and close. There is enough space to hold all the lunch boxes, cans, fruits, water bottles, snacks you want, and even all-day food you need, suitable for work, outdoor and travel. [Occasion Description] Go to school, work, outing, travel, going out, etc. [Washing Instructions] Do not wash, partial scrubbing, do not dry clean, and do not iron.