i am new to the world of Iron Heart, and i have had a bit of luck entering this world :). I found a 9oz IHSH-277 on Vinted and i also found a UHF Western red buffalo check and this shirt in question on a on a online Company that sells second hand clothes (which gives me the opportunity to return clothes) but it also gives little to none information. So i thought this shirt was a 9oz, but i would like to believe that this is lighter than that. And i noticed that there has been some 5.5 oz flannel shirts in the earlier collections? It is very soft, like a blanket.