Okay so here's my horses situation. My horse is usually not blanketed at all during the winter and he lives outside all winter( with a good shelter of course). This year I brought my horse to university with me, which is two hours away and it's significantly colder there. I got a call from the barn owner saying that it was -2 degrees last night my horse was shivering so the barn owner brought him inside so he could dry and warm up. Unfortunately that hard part is I'm home for winter break and with work it's really hard getting up there. She suggested I get him a blanket for when it's that cold. However I'm a little worried because he has a full winter coat and I don't want him to be sweating under a blanket. So I'm wondering how much fill to get in a blanket to keep my horse warm and dry when it's below zero and windy but not too warm that it will make him sweat? Anyone else have this issue? What do you do?