Jetec 70 Pcs 3D Filament Storage Bags Vacuum Sealed Kit, Include Reusable 3D Printer Filament Vacuum Storage Bags 13.4 x 11.8 Inch and Cobalt Free Humidity Indicator Cards for Keeping Files Dry

Reusable 3D Filament Storage Kit: you will get 50 pieces of 3D filament vacuum storage bags and 20 pieces of humidity indicators, a total of 70 pieces, sufficient quantity can meet your daily use and replacement; Keep your filament away from dust and air to improve printing stability and smoothness. Material and Size: filament storage is made of PE and PA composite material, safe and lightweight, sturdy and reusable; Its size is about 11.8 x 13.4 inch/ 30 x 34 cm, and the thickness measures about 0.09 mm, specially designed for 3D printer filament, also for food storage or others. Moisture and Dust Proof: the filament vacuum bag adopts double sealed zipper and single sided embossed design, which is moisture proof and dust proof to ensure the printing quality of the consumables; The micro porous design allows the bag to quickly empty the air within 30 seconds to achieve good airtightness. 6 Spots Humidity Indicator Card: the humidity indicator card starts out light brown ( dry) and then turns light green ( wet), making it easy to read; When you first open the card, all the dots may react and change color as they are suddenly exposed to humidity; Wait about 30 minutes and the card will calibrate and allow you to read the exact humidity level, clearly visible from 10% to 60% RH. Easy to See: reusable vacuum seal bags have a clear appearance, and can be applied with a humidity indicator card, allowing you to quickly check the humidity level of the filament without opening the bag; In addition, the humidity indicator card can be reapplied many times after drying with an oven or a hair dryer