A trampoline is a gymnastic and recreational device made up of a piece of taut, strong fabric stretched over a steel frame using many coiled springs as anchors. It has been said that the first type of trampolining was done by the Eskimos who used to toss each other up into the air on a Walrus skin something like the sheet used by firemen to catch people that are jumping out of the windows of houses which were on fire.
There also is some evidence of people in England being tossed up into the air by a number of people holding a blanket. These may or may not be the true origins of the sport of trampolining but it is certain that in the early years of the 20th century there were stage acts which used a "bouncing bed" on the stage to amuse the crowd. The bouncing bed was really a form of a small trampoline covered by bedclothes on which the acrobats performed comedy routines.