Yes I saw that, and I messaged the seller for dimensions.

Because without having such and just having to estimate from the structure of the sporran itself, I notice that the tab that's sewn onto the rear for the strap to go through seems a bit big in relation to the sporran back as a whole.

They would probably have a template for cutting those out, and perhaps would use the same template and tabs for both adult and youth sporrans.

I would have to look at the back of a known adult-size Paisleys sporran to make sure.