YOOPAI Filament Storage Bag Vacuum Kit-20Pack Cleaning Drying Sealed Bags for 3D Printer Filament with Desiccants/Humidity Indicator Cards/Hand Pump (Plastic 13.2 x 12.7inch)

The Ideal Dust and
Waterproof Solution: With a double-layer zipper and microporous construction, this YOOPAI compression container bag provides a vacuum and dry storage area for your products.
Efficient Vacuum Set: With a self-sealing valve on the storage bag and a handy manual pump, YOOPAI storage bag makes it possible to create a long-lasting vacuum condition for your filaments in just 45 seconds. This prevents moisture, dust and other influences and extends the shelf life of the filaments.
Practical Helper: Sealing clips ensure a gap-free closure, desiccants keep filament dry during storage.
High Quality & Wide Compatibility: This eco-friendly BPA-free storage bag is made of food-grade PE+PA composite material, which is safe, durable and recyclable. It is designed for common PLA/PETG/ABS/TPU/Nylon/Other 3D printer filaments. The size of filament vacuum storage bags is 13.38 * 11.81 in.
More Bags In The Packaging: The YOOPAI vacuum set contains 20 filament storage bags, 1 manual pump, 5 sealing clips, 20 desiccant bags. It offers more variety in your filament storage options and is a great value for money package!
If you find that the bag is not working, check
two things:
1. Have you sealed the bag with a sealing clip?
2. When vacuuming, press the pump down to apply a force to the valve port.