I've been using one of these for a couple months. It is warm and large enough to cover my tall frame. After losing a couple "wool" items by exposure to heat/flames, discovering afterward that they were wool 'blends' where the 'blend' part melted and ruined the item, I held a lighter to the corner of the blanket. A few surface hairs seemed to melt, but the blanket remained whole and there is not visible or tactile damage to it. I will confidently use this around my new rocket mass heater. Thank You for producing a great product!