Most shoes are either supportive or flexible; the Under Armour Spine Clutch Running Shoe claims to be both. According to Under Armour, the Spine Clutch fits like a second skin; it conforms to your feet without causing discomfort thanks to the 4D foam insole that prevent heel slippage and ClutchFit technology that hugs your feet and provides support without restricting movement. The mesh upper, which is shaped like the Under Armour logo, allows the shoe to breathe, keeping it comfortable in the long run. Although it's advertised as a running shoe, reviewers note that the traction is inadequate and tend to wear out easily. Hence it's probably more suited for the gym than on the road.