General description The 20pcs 3D Printer Filament Moisture Resistant Storage Bag is designed to keep your 3D printing filament dry and maintain its print quality. These vacuum sealed bags are essential for preventing moisture damage, which can lead to issues such as clogging, air bubbles, rough surfaces, and layer shifting during printing. Technical specifications Dimensions: 30 x 34 cm Quantity: 20 bags Usage Place your filament into the bag. Lock the zipper seal using the sliding clip. Hold the exhaust port on a flat surface and use a pump to remove air. Seal the tape to prevent air leakage. Other information Reusable design with an adhesive-covered exhaust port. Caution: Tearing the adhesive paper on the exhaust port will damage the bag. Ensure the air pump is placed directly on the tape for effective air exhaust.