Oreo lost his white chest hair from constant rubbing — he has a large chest and shorter front legs (compared to his brother Vetkoek), which resulted in ordinary harnesses to be ill-fitted, loose, and bunching up around his neck and legs, causing friction against his skin.
As our Harnesses are up to 4.5cm longer in the chest (compared to other brands), this allowed more room in the chest to still go past his leg area, so that the harness doesn't bunch up at the chest and neck areas - and now his chest hair has grown back!