What are the four modes the Graco 4Ever DLX can be used in, and what are the weight limits for each?

The Graco 4Ever DLX can be used in four configurations: rear-facing harness (4–40 lb), forward-facing harness (22–65 lb), highback booster (40–100 lb), and backless booster (40–120 lb). Each mode accommodates your child as they grow, providing up to ten years of use in one seat. Always verify your child meets the height and weight requirements before switching modes. (Page 7)