Here are some really nice vests spotted on the website.
Definitely need this one:
Striped Twill Vest
-Japanese Indigo piece-dyed twill with dotted stripes.
-Washed and hand tinted.
The Indigo Striped Blazer looks great too:
-Three button sport coat
-Japanese Indigo rope-dyed twill woven on vintage looms.
And the Herringbone Striped Vest seems perfect:
-Japanese Herringbone yarn-dyed striped twill
-Pocket corners reinforced with leather
-Washed for a worn-in finish
More jackets and vests here