Yes overlord
Okie sory didnt understand if u r referring the " duster " as the cowl on the helmet or the wool overall...
if it is cowl on the helmet,
that is pvc leather...can;t follow exactly like the movie prop for 2 reason, that is a melted thick plastic sheet since during lucas time, PVC just invented and expensive.
for the wool coat overall
that is been supplied out of good will by the seller...
for the boots information
troopers boots differs from commanders which if u are doing the commanders version, u are better off with searching the right model...i seen one in pertaling jaya ( sory if spelling mistake) in KL ...trooper's boot is an canadian artic troops snow boots and yes this is 501st recognized boots...is really meant for blizzard weather environment . Yours is more to a mukulus type which i have attached pic and hope it helps u...notice the saw edge on the boots bottom on the movie prop pics..
reference pic of the commanders i have
this is a member pic who did a commander outfit - recalled correctly should be badlands CA garisson member
alternatively u can come to sportmansguide.com to find ur boots, i found one closely match which u can refer to the following the smaller boots on the right
all the best in ur journey to being blizzard...for ur info there are 7 snowtroopers + commanders in total for asia