Leather question

I've been thinking about this recently, but what do the tanneries tell you guys the lead times are on the leathers, especially the monthly limited offerings? For example, I would've thought the admiral was ready to go but the Roanoke Denim will take a few months after you order it. At least that's what I had in my head. The more I see you guys discuss the leathers, the more I start to be curious about the backend of the business.