This type of uniform was originally issued to Soldiers requiring Flame retardant clothing.....This was in Military reserve storage......Hunters enjoy the light weight, while tracking game....often worn by those needing several pockets ...Has a sleeve pen holder.......these are harder and harder to find in good condition such as this........ Medium top.....Fits a man between the height of 5'7" to 5' 11" and chest size 37" to 41"