The present invention discloses a garment that is designed to prevent a child in a car-seat from removing his or her arms from the shoulder straps that are part of the modern 5-point harness system found in most car-seats. The garment is configured like a jacket, through the front of which the shoulder straps are threaded, allowing for access to the front closure hasp of the harness and ensuring the closure hasp is across the upper chest, while comfortably restricting the child's movement out of the straps by virtue of the sleeves of the garment which are now made part of the harness system itself.