The front of the product comes with a one-way air valve to prevent oxidation and prevent the bag from bursting. T-shaped side zipper, repeated use, and continuous sealing can be better preserved even if you don’t use it up. The interior is processed with aluminum-plated foil, which has a certain light-blocking effect and better insurance. Various specifications to meet different needs. Food is loaded into the bag and sealed using a machine with an opening on the front of the bag and an internal zipper that can be opened and closed repeatedly. Made from pet aluminized+pe film material, measuring 5.12*7.87*2.76 inches, this custom colorful aluminum foil sealed bag. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Eco-friendly material, reusable, foldable for storage.