One Piece Snowsuit How Long To Allow Toddler To Be Out In The Cold?

How long to allow toddler to be out in the cold? - one piece snowsuit

It is 25 degrees and snowing here ... I and my child play in the snow, but how long should I leave him to be there? Of course I'll be there with him, because he is only 20 months and is in a one-piece snowsuit with a hood and gloves, wrapped her hands folded ... But how long am I to think? I do not want it too cold ... and how long is too long? It is perfectly healthy, and I want to stay, if possible.