1. Easy to tear design, convenient, fast, and easy to tear zipper, saving time for finding tool openings 2. Hand pull hole design: easy to store and not tiring; 3. Convenient self sealing: bite type self sealing, which can be repeatedly pulled and not easily damaged, effectively locks in fresh and isolates dust and dirt from the outside; 4. Bottom self-supporting: Tightly sealed, with strong load-bearing capacity at the bottom. The widened design at the bottom increases the product capacity; 5. Window customization: high-quality display of product content. 6. Exquisite edge sealing and high-definition printing: Exquisite craftsmanship, neat edge sealing, high-definition printing, better and more intuitive display of product content.