Not exactly military spec. This blanket is not as durable as the current issue blanket.
This is an excellent blanket. I own three of them. I use them under my sleeping bag for extra protection from the ground. Otherwise I keep them in reserve for emergencies. Very thick (about 1/4 inch). I bought mine from a local surplus store so I was able to see and touch before purchasing.
This blanket is really not meant for everyday use. It is see through at some points and easily tears under regular use.This would be better used as a survival blanket but certainly not every night.