【Material】 The surface material is 90% cotton canvas fabric, lined with 3mm thermal insulation aluminum mold cotton (cold/thermal insulation). Sleek and simple, this easy-to-use drawstring lunch bag keeps you warm and easy to clean. 【Size/Package】21cm*15cm*30cm 【Simple and environmentally friendly】 This lunch bag is specially made for you who love simple life. There is no extra design, but it can fully meet your needs for lunch snacks. It can be reused with confidence and will not burden the earth. 【Waterproof and heat insulation】 The outer layer is made of cotton canvas fabric, and the inner layer is made of high-quality heat-preserving materials by hot pressing to prevent dripping and heat insulation. 【Bring your lunch bag and go】This lunch bag is not only suitable for work and school, but also for outdoor activities such as picnics, traveling, hiking, and fishing. Bring this dinner bag and your lunch will be complete.