-The bulb must be squeezed at least 8-9 times in order for the grabber to grasp a normal sized object (size comparable to the grabber itself)
-Takes anywhere from 10-20 lbs of force to push down on the air bulb (pressing down 3/2 inches or 0.0381 meters) which is equivalent to approx 66.7 newtons of force.
-Takes 23 joules of work to grab something
-According to the Topend sports website, the poorest grip strength (26.7 lbs) in both males and females ages 10+ should still be more than enough to successfully squeeze the air bulb.
-However, some items were shaped in such a way that they couldn't be grasped despite being very light.
http://www.topendsports.com/testing/tests/handgrip.htm
http://www.topendsports.com/testing/norms/handgrip.htm