Graco's top-rated Nautilus 65 LX 3-in-1 harness booster goes the distance, from toddler to youth, to help keep your growing child safe This toddler car seat secures your child in a 5-point harness from 22-65 pounds, converts to a belt-positioning, high back booster seat from 30-100 pounds, and becomes a backless booster seat from 40-120 pounds. The Simply Safe Adjust harness allows you to adjust the harness and headrest together as your child grows, with no time-consuming rethreading. You'll appreciate the ease of the fuss-free harness, for easy in and out, while your travel partner enjoys the comfy body insert, personal cup holder and storage compartment. Metal and plastic parts may be cleaned with mild soap and cool water.