20pcs Black thick elastic chair bands compatible kids. Sufficient quantity can meet your usage needs and replacement, you can also share with friends. Size: The black chair bands are 600 x 50 mm/ 23.6 x 1.97 inch. Premium Quality: Our childrens feety chair bands are made of quality rubber material, which has good elasticity, toughness, wear resistance, easy to install and remove, not easy to slip and break due to stepping or pulling, easily help students stabilize their emotions and make children more self-disciplined. Stress Relief: Fidget resistance chair bands is suitable compatible ADHD, autism, hyperactivity, SPD or other sensory needs. The bands can improve your child's attention, allow them to keep calm during study and class, reduce irritability and anxiety, and foster their patience. Multifunction: The elastic straps can be installed on the chair legs to help fidgety students self-regulate to improve children's concentration or learning, and are also suitable compatible rehabilitation training or physical therapy. Colour:Black Material:rubber Package Contents: 20 x Chair Bands Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.