If you mean the girthbelt is wide leather belt with max 22 rows of leather braids glued on top of it.
It's not most complicated thing to make but it takes some time, and it may require some skill.
There shood be pictures of the one I make here: For Sale - Delta13's Leather works.
Hi I make the girth belts if your interested,
and have two ready to send out pending on your measurements or I can have one made including the back cover and sent out within 5 days if you interested .
Spend a little time researching on this site. There is a ton of material here and a very detailed thread on this very topic that is very easy to locate.
Search button is your friend