?Before buying our lunch bag, please let me introduce it? ?What is the size of our meal bag❓ ?The size of our meal bag is 29x18x24cm (11.4x7.1x9.5in). ?What material is our lunch bag made of❓ ?As a material that can keep food warm, our insulated lunch bags are made of 300D Oxford cloth + braided belt + high quality aluminum film. ?What's so good about this material❓ ?This material is not only healthy and environmentally friendly, but also long-lasting heat preservation. Whether it's keeping warm in winter or keeping cold in summer, this insulated lunch bag works well. ?How to clean the lunch bag correctly❓ : ?No matter which lunch bag you choose, you need to clean the lunch bag correctly: Partially scrub, do not wash, do not dry clean, do not iron. Waterproof fabric can avoid getting wet by the rain or soup splashing, just wipe it with damp rag. If you find some smell in the neoprene lunch bag, please do not worry. The smell is from the material and not harmful to humans. We suggest that you keep it in the well-ventilated area for few days,the smell will disappear and please wash it before use