Pocket high chairs are also known as chair harnesses.  Pocket high chairs are an adaptable child safety product that converts most chairs into a safe dining seat for kids. The dining chair harness is suitable for children who are able to confidently sit upright unsupported. Usable with most chairs, a baby dining chair harness attaches quickly keeping your child securely in their seat so they can join you at the table. A great alternative for when space is limited, baby dinning chair harnesses come in a range of styles and patterns.