i never knew these even existed! When I found this on amazon I was like, “I have to have this!”. There was one time we went camping and we had to jimmy a car vacuum to inflate our air mattress....not a good time at all! I’m very impressed with this foot air pump! It is very well made and quite simple to use. It has 2 different sized needles. It not only has an inflate mechanism but a deflate one as well. This is perfect for our camping adventures!