I’ve been making wallets from Horween Chromexcel horse butt for years. It’s really a remarkable leather, so it surprises me how unpopular it is. Maybe it’s the color, who knows, but if you ever get the chance to handle this stuff, I’m sure you’ll be impressed. For this wallet, I used Herman Oak strap leather for the interior. As far as strap leather goes, nobody does it better than Herman Oak in my opinion. Both Horween and Herman Oak are two of America’s oldest tanneries. Like almost everything else, the tanning business has been hit hard in the U.S, so for these two tanneries to have survived, you can rest assured they produce very nice leathers.