Do I have enough clothes on?

Just back from a walk in the snow. Last time we went walking I put an extra layer of clothes on him from what he has on here and the poor wee thing was as red as a beetroot when we got home he was so hot. Well, when it's minus 10 degrees C it's hard to judge! Here is is today when we got home, still in his capsule (car seat) that sits on the buggy (stroller). He has two layers of clothes, two hats and two blankets on, plus the blanket over the top to stop any wind from getting in. He sits way down in the capsule like he's in a coccoon.