Ok what does everyone here think of this,I blanket my horses because we have rather extreme temps like -40 to 56 below zero. My older mare doesnt ever grow much winter coat,i don't blanket until early december. My other horse is alway cold shakes alot with out blanket,third horse he was very sick for the first half of winter so he wears a blanket also his keeps him warm. My other two are very cold under there blankets the one shakes when it below zero. The fill is 400grams fill 1200 denier the one has been used two winters the other one is on its third winter. I can't take blankets off now they would really suffer,iam going to order blanket liners. Do I need to replace these blankets there still water proof and in good shape but they are not doing what they are made for keeping my horses warm. Sorry about the long rant but need input on this.