The Koosh ball is a toy

Toy

A toy is any object that can be used for play. Toys are associated commonly with children and pets. Playing with toys is often thought to be an enjoyable means of training the young for life in human society. Different materials are used to make toys enjoyable and cuddly to both young and old...

 ball made of rubber

Rubber

Natural rubber, also called India rubber or caoutchouc, is an elastomer that was originally derived from latex, a milky colloid produced by some plants. The plants would be ‘tapped’, that is, an incision made into the bark of the tree and the sticky, milk colored latex sap collected and refined...

 filaments (strings) attached to a soft rubber core. It was developed in 1986 by Scott Stillinger to be easy for his 5-year old daughter and 8-year old son to hold and throw, and was named after the sound it made when it landed. Stillinger started OddzOn Products Inc. with his brother-in-law, Mark Button, who had previously been a marketing manager for Mattel

Mattel

Mattel, Inc. is the world's largest toy company based on revenue. The products it produces include Fisher Price, Barbie dolls, Hot Wheels and Matchbox toys, Masters of the Universe, American Girl dolls, board games, and, in the early 1980s, video game consoles. The company's name is derived from...

, in 1987 in order to market it. The Koosh ball was one of 1988's hot Christmas

Christmas

Christmas or Christmas Day is an annual holiday generally celebrated on December 25 by billions of people around the world. It is a Christian feast that commemorates the birth of Jesus Christ, liturgically closing the Advent season and initiating the season of Christmastide, which lasts twelve days...

 toys. The company later expanded their product line to include 50 other Koosh-related products, including keyrings, baseball sets, and yo-yos. The number of Koosh Balls sold is estimated to be in the millions.

The ball consists of approximately 2,000 natural rubber filaments, and has been released in a variety of color combinations. A variation was the Koosh Kins

Koosh Kins

The Koosh Kins were a variation on the popular Koosh ball, featuring faces and hands. They were originally created as a set of six characters, then released with variant colors....

 line, of Koosh balls with cartooney faces and hands. Koosh Kins was made into a comic book mini-series by Archie Comics

Archie Comics

Archie Comics is an American comic book publisher headquartered in the Village of Mamaroneck, Town of Mamaroneck, New York, known for its many series featuring the fictional teenagers Archie Andrews, Betty Cooper, Veronica Lodge, Reggie Mantle and Jughead Jones. The characters were created by...

, where they kept their cartoon-like appearance.