Product details of✅ 5–10 Year Long-Term PreservationThe airtight, light-proof Mylar material blocks oxygen, moisture and UV rays. It keeps grains and dry food fresh for 5 to 10 years, great for bulk storage and emergency food reserve.💪 Heavy-Duty 9 MIL ThicknessMade of 9 MIL thick puncture-resistant Mylar film. Strong enough for stacking and rough handling, won’t tear easily during long-time storage.🥗 Food-Grade & Leak-Proof DesignBPA-free & food safe material for storing dry goods and snacks. Double seal design: reusable zipper + heat sealable top, prevents leakage and contamination.📦 Stand-Up & Reusable ConvenienceStand-up bottom keeps the bag upright on shelves, easy to fill. Resealable zipper allows repeated opening and closing for daily use.🌤️ All-Weather ProtectionResists high humidity, extreme temperature and sunlight. Protect your food from spoilage and pests, suitable for kitchen pantry and off-grid emergency storage.✂️ Easy Tear & Secure SealingPre-scored easy-tear edge for simple opening. Solid side seals, you can get tight seal with or without heat sealer.