Features: storage kit which is used to your 3D printer filament especially those with high water absorption such as Nylon PVA or other filament. When the filaments are opened and not used up it will absorb and directly affect your printing quality. storage kit will help to store your filament in the right way. BPA free & FDA approved bag dust and proof strong sealing. Hand pump and bags are reusable environment-friendly and money-saving easy to use. The humidity indicator has high sensitivity and can be used repeatedly so you can know the humidity of 3D filaments at any time. Humidity indicator is reusable after drying. Sealing air valve and double zipper for air tight protection. The set is widely designed for 99% FDM 3D printing filaments it can be used for eSUN and other FDM brands. Specifications: --Hand Pump Material: ABS + Silicone Item Size: 16.5 * 3.5 * 3.5cm Item Weight: 50g Suction Power: ≥8LMinute -- Bags Material: PA+PE BPA Free & FDA Approved Size: About 33 * 40cm Thickness: 0.085mm Use Times: ≤ 50 Times Storage : -20 to 85℃ Package Size: 34.7 * 13.7 * 5.5cm / 13.7 * 5.4 * 2.2in Package Weight: 496g / 17.5oz Notes: Please read the user manual carefully before using. Please put the desiccant in the bag. (desiccant is not included.) Due to manual measurement the deviation of 1-5mm is normal. Packing List: 1 * Hand Pump 10 * Bags 2 * Sealing Clips 15 * Humidity Indicator Cards 1 * User Manual(English)