1Filament Vacuum Bags: All printing filaments are hygroscopic, and after absorbing water from the air, the filaments can cause drawing, clogging, and low adhesion. These filament bags are vacuum sealed to completely isolate air and water, keeping the filaments dry. 2Flexibility and Compatibility: This kit provides 2 sizes of vacuum bags, 20pcs in 34 x 30cm size and 5pcs in 32 x 45cm size, providing you with flexible storage option. Compatible with all 0.5kg, 0.75kg, 1kg, 2kg spools, as well as 1.75mm, 2.85mm, 3mm filaments. 3Strong Suction Power: Equipped with a 5V 3W automatic vacuum pump with powerful suction design, which allows you to easily, quickly, and efficiently seal the filament storage bag. Assist in expelling air and water, effectively keeping the filament dry. 4Reliable Materials: The printing filament vacuum bag is made of food grade PE and PA composite materials, with a 0.09mm thick design, lasting and recyclable. Specially designed for 3D printing filament, you can also store food, pet supplies, clothing, and other items. 5Excellent Performance: The filament storage bag adopts a double sealed zipper and single sided embossed design to prevent water and dust from entering, maintain the printing quality. Micro porous design can quickly expel air, ensuring excellent sealing performance. 6Reusable Drier: Provide 30 pieces reusable drier, silicone drier have strong absorption properties and can absorb more than 40% of their own weight in water. After absorbing, it can be dried in an oven or microwave to restore its original state. 20 x Vacuum Bags (34x30cm) 5 x Vacuum Bags (32x45cm) 3 x Clips 30 PackDrier 1 x Pump 1 x Data Cable 1 x User Manual