That said, we were disappointed to see that lumbar support is an optional extra on most models in the range. (whatcar.com)
Indeed there are many factors not included in most models that would increase extinction risks. (bitsofscience.org)
It's designed for extended rear - facing use for kids from 14 - 50 pounds, which is higher than the rear - facing limit for most models on the market. (thespruce.com)