The Special Tomato is FMVS213 compliant – meets all requirements for car seats designed for children weighing up to 150 lbs. Simply use the included LATCH System to properly anchor the Special Tomato as a car seat for kids up to 50 lbs. If your vehicle does not have LATCH System or for children weighing from 50 lbs. to 150 lbs., a vehicle lap/shoulder belt must be used. The tether system must be installed at all times when using your Special Tomato MPS as a car seat. The Special Tomato is also designed for use with standard tie-down systems for bus or van transport and meets ANSI/RESNA WC/19 safety regulations. FAA approved for aircraft travel for all seats purchased after April 1, 2006. 3-year manufacturer's warranty. Headrest is required.