The Radian 3R can be used up to 120 lbs (54 kg) and 57 in. (144 cm) for 2020 models. For 2019 and older Radian 3R models, it can be used up to 100 lbs (45 kg) and 57 in. (144 cm).
If you’d like to find out more about the Diono Radian 3R visit our store: https://store.diono.ca/radian-3r/