Vacuum Pouch Zipper Lock Bag with Air Valve for Food Storage and Cooking and Travel Use Amazon Hot Selling. Three-Layer Composite Material: Features high strength, toughness, and superior barrier properties compared to conventional two-layer structures. Low Oxygen Transmission Rate: Oxygen transmission rate is less than 5, significantly extending food freshness compared to over 28 for standard bags. One-Way Air Valve Design: Prevents air from flowing back after vacuuming, ensuring fast evacuation and high vacuum degree for hygienic use. Double-Track Self-Locking Zipper: Provides excellent airtightness ideal for long-lasting freshness preservation of stored items. OEM and ODM Services Available: Customization services offered for branding and design requirements. Food-Grade Safety Certifications: Meets BSCI, LFGB, RoHS, Reach, GS, FDA standards and is BPA Free. Multi-Purpose Application: Suitable for food storage, cooking, clothing packaging, and travel use. Eco-Friendly Material Options: Available as disposable, recyclable, and reusable bags made from Pet/PA/PE.