The Lotus Crib is generally useful until around 2.5 years or longer (depending on how quickly your child grows/develops).
The Lotus crib does not have a weight limit, as the mattress is supported by the floor.
We do have a warning that says to discontinue use after your child reaches 35" in height.
Note: this height restriction is a federally mandated warning that all travel cribs & pack n plays have.