The Torofluxus or Toroflux is a toy that was invented in mid-1990s by Jochen Valett. It is a 27-foot-long (8.2 m) ribbon of steel which is woven into a torus spring. It is often sold pre-attached to a larger plastic ring. The spring flows downwards along the plastic ring, creating a shimmering effect like a silver bubble. The spring tension in the steel tightens the inner spiral core, causing it to cling to the plastic ring.