Inflatable air packaging bag is easy to inflate. You need to put the up-side of the bag facing you. You can see the air valve film. The white color is mark of air valves. On the right side of the bag, you can find the inflation inlet, through which using the air pump to inflate until the bag is inflating to a suitable pressure. Over inflating will cause blow.
You need to follow the four steps:
1.Put the up-side of the bag facing you.
2.The Air Valve is on the right side of the bag.
3.Inflate the bag with air pump.
4.Move away the air pump until the air column bag is full.