1. For children 30-100lbs. For use as a belt-positioning booster 2. Slide-out cupholder. Keeps beverages close at hand 3. Comfy armrests. Provide added comfort for child 4. Adjustable height positions. Grows with your child 5. Easily converts to a backless booster for children 40-100 lbs. Ideal for travel. Also great for older children who prefer a backless booster 6. Removable, washable car seat pad. For ease of cleaning