The Leckey Squiggles Flip-Away Laterals provide cushioned support along the side of the trunk to keep your child sitting upright. These Laterals have a pin in the back that allow you to move the laterals out of the way for transfers in and out of the chair. The Lateral Hardware is included with the product. You can also opt to add on the Chest Support that provides support along the front of the trunk to encircle your child's trunk.