Wanderlust World Wanderlust World There is no evidence indicating that Bill's Khakis exist as a physical product, let alone being available internationally in Europe or elsewhere. The brand appears to be either fictional, extremely niche, or possibly a misunderstanding of another khaki brand.
If you're looking for quality khaki pants in Europe, consider well-established brands like Dockers, Bonobos, or European labels such as Massimo Dutti, COS, or local retailers that carry chino-style trousers.