This from the Horween site @ http://horween.com/index.php/leathers/
Chromexcel is characterized by a rich pull-up in full aniline, hand rubbed finishes. Made to this day with old world craftsmanship, modern Chromexcel carries on a long history of superior comfort and durability.
Pull-up – A temporary lightening in color achieved by bending leather. This is caused by the temporary displacement of oils, greases, and/or waxes.
The Roy Boot, a collab between...