perfect Solution for Dust & Water Proof:With double seal zipper and -porous design, this compression container provides a provides a closed and dry space for your products. Efficient Vacuum Kit:with -sealing valve on the bag and a tiny hand pump, this allows you to create a vacuum state for your filaments in a few seconds to keep in tip-top shape and portable. High Quality & Broad Compatibility:maded of food grade material, this environment bag is safe, durable and recyclable; especially designed for 3D printer filament of 0.5KG/0.75KG/1KG and 1.75mm/2.85mm/3mm. It can also used for food or other material . Usage: Step 1 :Put the filament in the bag Step 2:Seal the zipper with clip Step 3:Pump the out Step 4: smooth the valve. Colour:White Material:plastic Package Contents: 1 x Electric vacuum pump 1 x Cable 10 x bags 4 x sealing clips Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.