Encourage active sitting and relieve excess energy, stress, and anxiety with these stretchy bands. Easily attach them to chair legs; the molded, heavy-duty plastic support pipes keep each band positioned at the perfect height. Great for kids with ADD/ADHDA "students will stay on task longer, get more work done, and feel happier when theyA re able to bounce their legs up and down while remaining seated. The bands even stretch to fit adult chairs! Latex free. Fits chairs 13" 18" wide.