Royal Twill has more of a defined twill rib. Fine twill is smoother. A twill weave is the diagonal rib like you’d find on denim, though shirting will be noticeably smoother.What are the differences between their custom Sky blue royal twill and sky blue fine twill shirts?
They're priced the same but the fine twill is 2 ply 80s and the royal twill is 2 ply 120s
eDIT: I guess what I'm asking is what is the difference between royal twill and fine twill?
I have a white royal twill shirt and it’s my favorite dress shirt. Just enough texture up close and nice substantial weight while still appearing very dressy.