This material is a moisture sensitive material. The spools are shipped in resealable mylar bags, which are impermeable to light and moisture and help protect the filament from potential damage. Within the spool there is also desiccant to keep the environment moisture-free. A moisture sensitive material will run the risk of a high moisture uptake if stored improperly, which can result in decreased print quality and damage to the extruder.
Please reference our guide for working with moisture sensitive material here.
If your material does become exposed to moisture, you can dry it using the METHOD Drying Cycle and this kit.