Ok I am now reading a manual for the Infa-Secure Rouvette from K-mart, and its only mentioning going into booster mode when the child reaches the height marker. No mention of weight at all ..... does that mean weight doesnt matter for this seat and your to go by height only? But then the Infa-Secure Odyssey manual is different and mentions weights, not shoulder heights (its the same weights as the Ezy Combo).

I just dont think those added harnesses look safe, and I dont feel comfortable putting DS into booster mode when he is too young/not tall enough. I hate how confusing this is lol