The fibers on the FiberFlies start at about 6 feet long, and are cut at different places along the length of the FiberFlies to create a beautiful, wispy effect. The longest fibers are 6 feet, and there many different lengths down to about 1ft at the shortest.
If you prefer FiberFlies with shorter strands, you can easily trim the fibers with a pair of regular scissors.
Here's a handy link to FiberFlies PixelWhips: http://www.flowtoys.com/pixelwhip/
If you have any questions, please feel free to contact us!