Question: what is the difference between metcon 4 and metcon 4 xd?
Answer: The outer construction is one of the biggest differences between the Nike Metcon 4 and Nike Metcon 4 XD. The Nike Metcon 4 XD offers a haptic 3-D print. Haptic print is a textured layer of material that provides the Metcon 4 XD with its shinier and layered forefoot appearance.