Horween leather strap

Hi, I have purchased silver 46mm Moto with cognac band (I was forced to, because there were no other options).
I want to find the black horween leather strap for Moto 360 2nd gen but could not find it. It seems that the official Moto site has only 1st gen straps (based on the pictures).
Can anyone suggest where to buy it (better amazon, ebay, etc with international shipment)?

G4 like leather back cover...

Does anyone make a rear cover like the G4?

Saw the Tetded covers but wanted something else possibly thinner...
Does this exist?