This optional set of Stabilizers is designed for exclusive use with the Pango Pediatric Activity Chairs. The Stabilizers provide further support for the chair, keeping it from tipping to the side or backwards. Terrific for overly active children who may rock the chair, the Stabilizers prevent injuries to children by keeping the chair upright. Please note, this is a set of Medium Optional Stabilizers for the Pediatric Activity Chair only. The Pango Pediatric Activity Chair is available separately. The Pango is CE marked and meets the essential requirements of all relevant European Medical Device Directives. No assembly required. Open the box and simply attach the Stabilizers to the chair through the pre-drilled holes. These Stabilizers fit the Medium sized Pango Activity Chair only. If you have the Small chair, Small Stabilizers are available separately. Relatively flat at 2.5" tall, the Stabilizers are easy to store when not in use. To clean, wash with a damp cloth and mild detergent.