I am guessing that there will be a lot of geographers who will be wearing these shirts by the middle of 2016. They feature very detailed maps of cities around the world.
Originally the result of a Kickstarter project, they are created by Alex Szabo-Haslam who is apparently based in Sheffield.
They use Open Street Map data, which Alex than takes to create the final map, showing the 'framework' of the cities.
Each shirt is made by hand on American Apparel t-shirts using a sublimation printing process, which means the design is not a transfer which could fade or be damaged by ironing.
You can now obtain the shirts from the CITEE shirts website. There is a large range of cities available worldwide (40 at the time of writing)
I was tempted to get Sheffield, which is where I used to work at the Geographical Association, and is the nearest city to my place of birth, but in the end went for my adopted home city of Norwich.
Shirts cost £28, and there is no charge for postage and packing in the UK. The site accepts PayPal, which is always a bonus….
You'll see me wearing mine at the GA Conference in April, GI Forum in Salzburg in July and (probably) TedXNorwich and other events...