Our babyden was at the lowest level and Oscar *could* do it by 20 mths. He is tall and was a very tall baby before 2 yrs old, has slowed down since....was 86cm at a year and I think 95 at his 2 yr check....
In the cot, once he had scaled the babyden, I put his grobag on back to front so he had no way of opening it and then no way of hitching one leg up.
I am starting to worry about Emma as she is even more of a climber than he was....
S x