Please contact me on Etsy for custom requests for this item.
The pattern for this hat can be found here on Ravelry, here on Craftsy, or purchased directly here. The pattern is written in two sizes, the smaller one (pictured here in red) and a slightly larger size (pictured in black). I have included the lettering "STL TRI" but you can easily adjust the lettering to spell any 5-7 letter word (as long as you have graph paper handy to work out the letters). Feel free to contact me if you need help adjusting the lettering.
As always, thanks to Pablo Tsukayama for the pictures!