If you want to support the Slackware project, you can order this T-shirt, from the slackware store

Here is an example of the Slackware T-shirt.

[img_assist nid=1044 title= desc=slackware t-shirt link=none align=left width=500 height=235]

And here a zoom of the back of it

[img_assist nid=1045 title= desc=slackware t-shirt zoom link=none align=left width=500 height=375]

Support the project get yours.