You just fill the bag and suck out all the air using a regular vacuum cleaner.You close the bag at the top by using the included zip slider.Please refer to packaging label for country of origin.WARNING! Choking hazard. Keep out of reach of young children.2 zip sliders are included.
Bag:Polyethylene plastic, Polyamide plastic
Zipper/ Valve:Polyethylene plastic
Wipe clean with a damp cloth.Wipe dry with a clean cloth.