Using this NinjaFlex filament is easy. First, make sure your 3D printer is compatible with 1.75mm filaments. Load the filament into your printer as you normally would. Since it's flexible, take a bit of care while feeding it to avoid any tangles. When printing, keep in mind that NinjaFlex has unique elastic properties, so your prints will be bendy and stretchy. For best results, follow the temperature and speed settings recommended for TPE filaments in your printer's manual. As for storage, keep it in a cool, dry place away from direct sunlight. This will help maintain its quality. If you notice any issues with feeding during printing, check for any blockages in the extruder and clean it if necessary. With proper use and care, this NinjaFlex filament will give you great 3D printing results every time.