Question, silly: Shen Wei's arms

[sef1029]

I've been noticing how so many of Shen Wei's outfits have a stripey detail in the middle of the upper arm. The charmingly ridiculous sleeve garters, of course, but there are also stripes in that location on sweaters, on his YOHO cloak, and the laughable buffalo plaid shirt has a break at the same spot. Plus, the first wound we see to Shen Wei is stripey claw marks on his upper arm. 

Is this significant in ways I don't understand? Theories? I'm thinking there's a comic fic somewhere in here...