Size: 21 x 17 x 15 cm.Made of high quality material safety and environmental friendly materials. The outside of the lunch bag is made of durable, high quality Oxford fabric. The inner structure is made of environmentally friendly aluminium foil. The aluminium foil can form an insulation layer inside to keep food temperature.Large opening design for easy loading and unloading. The mouth of the bag is easy to close and can have a better heat protection effect. Large capacity to transport more foodEasy to carry. With a comfortable grip, you can carry it by hand or put it in your backpack.This insulated bag has multiple uses. You can save food with temperature in winter and ice water in summer. It is your best helper at picnics, camping, parties or when you bring food to friends, family and children. Material: Oxford cloth Interior: environmentally friendly aluminium foil lining Tips: 1. Picnic and office meals, suitable for different life scenarios. 2. It has good air tightness and can be waterproof and moisture-resistant. 3. Ice drinks can be stored in the summer while hot drinks or food can be stored in the winter. 4. If ice water is stored, it is recommended to put in an ice bag. Can extend the cooling time. 5. Can be used to keep baby milk warm for children. 6. Do not store cold and hot food at the same time. Package Included: 1 x insulating bag. If you have any questions, please contact us through Amazon Buyer Messages. We will reply within 24 hours.