Size of Patch on Borough Roll-Top Small?

I just ordered a Borough Roll-Ttop Small for my T Line for endurance rides. However, the model available today (at least in the US) has a prominent orange "G" patch for the G Line. As my T line is indeed not a G Line, I'm hoping to go on Etsy and order a custom patch. However, I can't for the life of me find what size the patch is. Does anyone have one of these bags and know what the dimensions are?

If no-one replies by the time the bag arrives, I'll go ahead and measure it and post here 🙂