Are these flags really silk?

Yes!  Our flags are 100% natural dyed silk.  Think of the most luxurious silk scarf... in fact, they are made by the same processes.  They have a very nicely sewn continuous hem that will make them last for many seasons (though they are silk and should be taken down in strong gales or intense rain and hail.)  You will be very satisfied with the quality as you represent your Kingdom!  We are also looking at adding Principalities and Baronies soon!