MATERIAL: made of polyester fibre material, which is heat preservation, helps to keep your food or drink at a right temperature and protects against spills, splashes, bumps and drops. DIMENSION: Dimension:11.47inch L x 5.7inch W x 11.47inch H MULTI-FUNCTION: can be used as a lunch box bag, picnic bag and supermarket shopping bag for school or office lunch insulation, wine, fruit preservation, beverages, frozen food, snacks, medicines or other items storage. HUMANIZED DETAILS: Adjustable Shoulder Strap, helps people with different stature to carry it comfortably and easily. It can be used as a handbag or crossbody bag; foldable and portable design, easy to carry and more space-saving. Soft grip handle makes it easy to carry. Prefect for shopping trips, lazy days out, lunch bag for school, office, gym, beach or swim, suitable for parents, chlidren, students, men, women, kids, boys, girls, biker, worker and all the lunch and snack lovers.