Well, it's a synthetic pleather but if It were a huge issue, that's something that any leather worker could swap out for you for a decent price, just remove the existing ones and request they be duplicated in real leather.I've seen it, the bad thing is that the straps are made of plastic...
A greetings...
Your next best option for a shield that's mostly accurate is a King Arts, but after import shipping you'll be spending upward of a grand.
Aside from king arts, if you want to wait to see if relicmaker tackles this project, your options otherwise vary between cheap and inaccurate.