YOOPAI Filament Storage Bags, 20 Pack Reusable Bags for 1KG Spools Upgraded Airtight Seal, 37.8x31.7 cm Vacuum with Double Zip, Printed Labels & Valve, Only

Upgraded Airtight Sealing System: Double zip closure and vacuum valve work together to create a secure airtight seal and support reliable vacuum retention. Fully close both zip tracks before removing air to help minimise air re-entry during filament storage Reusable Extra-Large 1KG Fit: Designed for repeated opening, resealing and vacuum storage as you change spools, colours or materials. Each 37.8 x 31.7 cm bag comfortably fits standard 1KG filament spools, with additional room around the zip and valve for easier loading and sealing 20-Pack Refill for Multi-Spool Storage: Includes 20 reusable filament vacuum bags, making it a practical refill option for users who already have a compatible vacuum pump and need additional bags for a growing filament collection. Pump and other accessories are not included Printed Bags with Writable Labels: Each bag features a printed exterior and writable label area for recording filament type, colour or spool details, helping you quickly identify PLA, PETG, TPU, ABS, ASA and other materials without opening multiple bags Store Filament Between Prints: Vacuum storage helps reduce continued exposure to ambient moisture and dust after filament has been dried. Ideal for organising and storing multiple standard 1KG filament spools between printing sessions