Bouncy Bands for Elementary Chairs can be used with most elementary classroom chairs to provide anxious or fidgety children a quiet, distraction-free way to get their wiggles out. and they also stretch to fit up to fifth grade chairs. These latex-free bands are stretch to fit chairs with a distance of 13-17" between the chair's front legs. Once installed, the 4" support pipes help keep the bands secured even when chairs are lifted, moved and stacked.