Hula hoop is a toy hoop which is traditionally twirled around the waist but also the neck, and arms is popular. The modern day hula hoop was invented in 1958 by Arthur K Melin and Richard Knerr, who using the idea of Australian bamboo exercise hoops manufactured hoops from plastic and with national marketing and give-aways a fad began.
At its peak 50,000 hula hoops were produced per day. 25 million plastic hula hoops were sold in 4 months and in two years sales reached more than 100 million units.
A standard size hoop is 71 cm/28 inches for children and 102cm/40inches for Adults. Todays hoops are made from plastic tubing, traditional materials include willow rattan, grapevines and stiff grasses.
Recent hoops have included LED to light up others include different plastics, glitter, glow in the dark. Some extreme people even twirl flaming versions in acrobatic and other performances.