Factory Tools is a designer of vintage-focused scooter shirts. They sell them through Piston Ported’s site. One that stands out is their technical drawing of a wasp shown with its corresponding Vespa parts. Hint: The antennae is the fender crest. The shirts are hand screen printed on Gilden Heavyweight T-Shirts (90% cotton/10% polyester) and range in sizes from SM – XXL. They’re about $15 a piece.
Thanks to Matt for letting us know about these!