Inian clubs belong to a category of exercise (and juggling) equipment that was popular in the late 19th and early 20th century in Europe, the British Commonwealth and the United States. They comprise bowling-pin shaped wooden "clubs" of varying sizes and weights, which are swung in certain patterns as part of an exercise program. They can range from a few pounds each, up to special clubs that can weigh as much as 50 pounds. They were used in carefully choreographed routines where the clubs were swung in unison by a group of exercisers, led by an instructor in the front, similar to modern aerobics classes. The routines varied according to the group's ability and the weight of the clubs used.