Orient Black Mako on Android rubber.
The texture is comfortable, but a bit of lint and hair magnet (adjusting the keepers is always a hair-pulling affair). Strap is a bit stiff so fit is a bit hit and miss. With my wrist and the OEM buckle, it has to be adjusted just a bit tighter than what's truly comfortable. Will probably be fine if I switch to a buckle of slightly different length.
When Android was rebranding to Aragon, they were selling the Android-branded straps (name appears only on the buckle) for $10 apiece. At that price, I have few complaints. They still sell these under the Aragon label for $30, and at that price I'd look to other options.