- Material: Polyester 2. The interior is easy to clean and easy to wipe 3. There is a tissue bag on the side for easy access 4. Mesh bag test package design, not torn 5. It can keep warm for 4-6 hours and keep cold for about 12 hours 6. The zipper opens and closes smoothly, easy to use 7. Dimensions: 27x13.5x26 cm 8. Weight: About 400 grams