The Koosh ball is a toy ball made of rubber filaments (strands) radiating from a steel-bound core, patented in 1987 by Scott H. Stillinger. The company later expanded their product line to include 50 other Koosh-related products, including keyrings, baseball sets, and yo-yos. The ball consists of about 2,000 natural rubber filaments, and has been released in a variety of color combinations. As of 2020, Koosh balls are manufactured by PlayMonster in cooperation with Hasbro. They have introduced a range of new product lines, including Koosh Galaxy and Koosh Cameos.

Koosh Kins

The Koosh Kins were a variation on the Koosh ball, featuring faces and hands. They were originally created as a set of six characters, then released with variant colors. The characters were featured in a four-part comic book miniseries released by Archie Comics, as well as a series of coloring books. In that series, they lived on the planet Koosh, a large Koosh ball planetoid that, in lieu of a proper orbit, bounced against other planets to travel across the universe. Characters include: