The costume design in Game of Thrones is nothing short of superb. Each area of Westeros and the lands beyond has a different look with varying textures and colors. There are unique touches to suit each individual. Ser Jorah Mormont wears leather armor that’s beat up and weathered — it matches the years he’s spent roaming and wandering. Replica Props Forum (RPF) user Wailonskydog wanted to remake his Jorah armor and decided to use vegetable tanned leather to make it closer to what’s used on the screen. He says:
The armor consists of the chest and back plates which will be a base of leather tooled/stamped to the woven pattern with leather overlays around the top/bottom and sides, the two bicep guards, the bracer, and the pauldrons. Lots of pieces to glue together and tool. I’ll have to make some custom stamps to get some of the patterns. It’s a bit daunting but since I’ve already made one I think I have most of the design and details worked out and just need to transfer it to the leather. We’ll see how it goes.
He made templates from foil and duct tape and traced the patterns onto leather. There are photos below. After the armor pieces were cut out, he used brown oil dye to change the color. It looks like an incredible amount of work.
Read more about the build at The RPF.