Welcome to the store! Adopts full sealing technology, excellent sealing for protection, no pollution, solves the problem of 3D printer filaments and other consumables directly contacting the outside, and extends the service life of 3D printer filaments. Simply put the spool into the bag, seal it with a sealing clip with the wet tape, and then use a hand pump to remove excess air. Moisture causes 3D printing filaments to cause stringing, clogging, poor adhesion, and layer shifts. Store the 3D filament in a dry bag to keep the filament dry. Note: The blue label cannot be torn off and does not affect normal use. Specifications: Material: Plastic Bag Size: approx 30x34cm/11.81x13.38in Pump Size: approx 16.5cm/6.50in Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. Package Includes: 10 x Storage Bags 1x Hand Pump Your satisfaction is our highest priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution! _tfrf