Why is it that the CloudSleeper can only be used from 3 years?

Babies typically have other solutions, like foldable travel cots, cribs etc. We wanted to make a travel bed for children from three years and upwards as we saw the lack of good products in the market for this age group. In addition, the few options we saw were old-fashioned plastic/PVC inflatable beds, which are bulky, heavy, and not very suitable for travel.