Duck Shorts - Black ihsh-21-blu The Flat Head details include

The Flat Head details include selvedge plackets and gussets

which is a welcomed change

Medium/high rise

so you may need to size up from your regular denim size for the 400S

Duck Shorts - Black ihsh-21-blu The Flat Head details includeThe UES Duck Shorts in Black are an excellent pair of shorts in a nice light to medium weight fabric. These are 100% cotton and sulphur dyed black, which will slowly fade over time. The Duck Shorts are reinforced on the interior, in the seat and crotch area, with a linen fabric for a soft and dry feel to keep your body moving without the shorts sticking. These are a classic and well made pair of shorts that will age with you for many years to come.