Attaches easily with steel hooks to the Rainy Day Indoor Support Bar (sold separately). This rugged canvas swing is designed to hold and conform to your child's backside to offer a better sense of security. Great for use in home, school, and therapy settings. Turning your doorway into a sensory intergration center for play and therapy. The Rainy Day Indoor Playground System, the strap swing is ideal for families with limited or restricted access to outdoor play space.