The Air Jordan 11 was meant to stand out with a fusion of performance and style. Taken from the world of high-end mountaineering backpacks, the condura nylon upper gave the Air Jordan XI model lightweight durability. Further innovation came with the use of a carbon fiber plate on the sole of the shoe, that can be seen underneath the clear outsole, which gave the shoe exceptional torsional rigidity. The most visually distinct aspect of the Nike Air Jordan was its shiny patent leather mid and toebox. A material long used in the fashion industry, patent leather was extremely lightweight, when compared to genuine leather, and also tended not to stretch - a very useful property to help keep the foot within the bounds of the shoebed during quick direction changes on the court. The shiny leather gave the XI what many described as a "formal" look - a fact that many owners of the shoe took advantage of thereafter, pairing the shoe off the court with business suits in substitution for dress shoes. Boyz II Men wore black and white Air Jordan shoes with white suits at one of their concerts.