I have the kind that you vacuume the air out, as well as the kind you roll out. I have a airbed that came with a inflating device that you plug in, the opposite end of it has a deflating device. I used to travel with this, it not that big, size of a grapefruit. It worked great. You can buy these in a sporting good/camping section of stores. Just make sure it has the deflating option on it.