t-shirt

(Is it a 't-shirt' because it's shaped like a 'T'? As opposed to what? A k-shirt? A p-shirt?)

We have the first Active Set t-shirt now available in a range of sizes. One of the earliest associations I had for the name 'Active Set' was people playing tennis, so Michael Castro ran with this and found us a great vintage shirt design, which we modified, color-schemed and voila! 

Buy one today.