Our two year old grandchildren, fraternal twins, stay at our home and RV frequently. For long periods of time. They are much too agile to contain in the enclosure anymore. Woe is me!!! We do use the leash system with the stuffed animal backpacks for our sanity and their safety when walking near the river or at Disney. I am 66 years older then them. They have the advantage when it comes to running! Sometimes we have to infringe on their freedom a little bit to protect them. Some people out in the world always have to criticize. We love these little persons way to much to not prevent them from harm. Two year olds are walking accidents anyway!!! Thank goodness they bring their mom or both parents most of the time!