Features: 3D printer dilament storage kit allows you to protect your filaments from moisture, dust, insects-, mold, odor, etc.it will be in the best condition- to print. It is much easier to draw the air out of the vacuum bags with hand pump, easy to operate. With dry and wet dual-purpose, dust and moisture-proof. Effectively prevent consumables from oxidation and moisture-proof under vacuum environment.Made of high quality multi-layer composite materials, recyclable and durable. SPU:Vacuum bag is a great way to solve this problem by keeping the filaments in vacuum storage when you're not using it. And can be reused many times. The "bite in" clip chain can lock the pocket firmly with one pinch. Specifications: Item Type: Filament Storage Bag/Hand Pump Bag Size: approx 34X30cm/13.38X11.18in Pump Size：approx 140x30mm/5.51x1.18in Material：Plastic Applicable Scene: 3D Printer Package Type: 1 Hand Pump with 20 Vacuum Bags/ 1 Hand Pump with 10 Vacuum Bags/ 1 Hand Pump with 5 Vacuum Bags/ 1 Hand Pump with 1Vacuum Bag Package Includes: 1 Set Filament Storage Bag with Hand Pump 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 the manual measurment.