1、【Vacuum Storage Kit】: Vacuum storage kit, which is used to protect your 3D printer filament. Strong sealing, keep your filament clean and dry. 2、【Durable and Reusable】: The thickened vacuum bag is made of high quality PA+PE material, durable and reusable, safe and environmentally friendly. Vacuum drying can be maintained for more than one year after pumping. 3、【Easy to use】: Put the filament in the vacuum bag(Desiccant can be put in at the same time), use the clip to seal the bag, connect the power supply of the vacuum pump, align the pump port with the suction valve of the vacuum bag and tighten it, and then start the button for air extraction. (Desiccant and filament are not included.) 4、【Small But Powerful】: Electric vacuum pump is powered by USB cable, easy to access any USB port like computer, laptop, mobile phone charger, power bank, etc. The vacuum pump can automatically remove the excess air in the vacuum storage bag, very convenient to use. 5、【Great for FDM 3D Printer Filament】: Sealing air valve and double sealed zipper for air tight conservation. The vacuum set is widely designed for 99% FDM 3D printing filaments.