Vacuum suction Pump - Vacuum filament storage bags are a good option to keep your opened 3D printing filaments dry to prevent absorbing moisture from the environment.
Features:
1. Bilateral sealing teeth of the bag opening.
2. Air valve for easy pumping out of inside air and prevents from air leaking in. 
3. Hand suction pump provided.
Specification:
Bag Size: 340*300mm
Suction Pump: 140*30mm
Weight: 55g (including the pump)
Package includes:
Sealing clip* 1
The picture is for reference only. Please adhere to the original products in case of any mistake.