It is an old model or a product that we can no longer order at the manufacturer.
This is my second pair of Greenwood boots I was so impressed with my first. Like old friends from the first walk, they lasted me years and hundreds of miles and I never had to polish or treat them (something I am very lax at). Only had to replace because the shale on Snowdon sliced a deep gash in the sole otherwise I’m sure they’d have done twice the distance. Have worn many boots in my time but these are my all time favs.