Abstract: A child safety harness comprising a first seat belt having hooks for securing the seat belt to anchor points of an aircraft or land vehicle, and a second seat belt connected to the first seat belt for fastening around a child. The second seat belt may be fastened to the first seat belt using one or more straps, for example two straps at opposite sides of the child's seat belt. Adjustment slides may be used to alter the length of the adult seat belt and the straps interconnecting the seat belts. A method of securing a child in a vehicle includes fastening a first seat belt around an adult, the seat belt being secured to the vehicle; and fastening a second seat belt around the infant, the second seat belt being secured to the first seat belt.