If you want it to last as long as possible than I'd say you should treat the leather once in a while. Yours looks very dry, and that leads to cracking.
You don't need to be a fussy about what product as with a Brooks as the leather isn't supporting your weight. I prefer a Viberg product, but for this I think sno-seal will work for protection, and almost any leather treatment (Boot grease etc.) will be good to hydrate.
April 12, 2017, 8:51 a.m. - tashi
If you want it to last as long as possible than I'd say you should treat the leather once in a while. Yours looks very dry, and that leads to cracking. You don't need to be a fussy about what product as with a Brooks as the leather isn't supporting your weight. I prefer a Viberg product, but for this I think sno-seal will work for protection, and almost any leather treatment (Boot grease etc.) will be good to hydrate.