The Air Jordan 7 Retro 'J2K' is a unique and eco-friendly limited release sneaker from Nike. Its upper is made up of a patchwork design in an Obsidian color, with tonal piping, a Filbert-hued inner bootie, and Natural laces. The shoe also features an Obsidian midsole with eye-catching Natural and Filbert-colored jagged detailing on the sidewalls. This particular model was released together with another version in a Filbert-based color, in August 2012. The remarkable aspect of the 'J2K' is that the patches used to create the upper were crafted from leftover materials, showcasing Nike's Considered design approach towards sustainability.