It's made to order cashmere houndstooth from Aaron; https://instagram.com/combat_straps?igshid=4z4k6l579ttu
Just back from a fresh full service, but as you can see the lens needs replacing, has been polished but numerous microcracks throughout the lens from extreme edges to centre. My WM will try and find a replacement as he hasn't got one in stock ( I have used all his old stock on other Roamers).