Wolverine Leathers^® are a world-leading producer of fine leathers and the Horizon Eco Nubuck is their most eco-friendly. The GS Chukka in Olive/Wolverine is a mid-top progression of the classic GS shoe with upper constructed from biodegradable and metal-free Wolverine Leathers^® Horizon Nubuck. This style also features Shockbed™ insole for enhanced comfort and Globe's Super-V™ outsole for enhanced grip and board feel.