Jordan Spieth's new Under Armour Spieth 3 golf shoes were unveiled on Tuesday, and the goal of the new shoe was to create one that was designed to feel like Spieth's favorite training shoes that are worn in just the right spots with laces that have seen better days. Considering that Spieth is sponsored by Under Armour, you'd think he'd be ready for a fresh pair. But there's something about the way the shoes fit and continue to stay intact while taking a continual beating that makes him keep them around. In fact, Spieth has been wearing the same trainers to the gym for years. "I wear them every day, a couple of them are like two or three years old, the laces are all messed up, but they're my favorite Under Armour shoes that I use in the gym doing the moves that I train for my golf swing," Spieth told GOLF.com. European Tour Performance Institute who specializes in biomechanics, Spieth and the Under Armour's design team undertook the task of creating a shoe that was not only lighter than the previous version but offered even more traction and stability.Incorporating insights into torque and rotation of the swing, Under Armour utilized a patented rotational resistance and traction system in the sole that grounds the foot, both vertically and horizontally, reducing the possibility for slippage at impact. "My one concern when we went lighter was that there was no way it was going to be as stable because you're not weighed into the ground as much," Spieth said. "I just wanted to make sure we did everything possible to make them as stable, if not more stable than the previous version." The traction system in the sole was paired with a Clarino microfiber upper and "Smart Woven" jacquard forefoot and heel counter that supports the foot during the swing. A strategically placed carbon fiber insert and EVA midsole were also added to provide comfort and support on the course. The UA Rotational Resistance Spike (RST 2.0) and Softspike Silver Tornado found on the sole not only improve traction but lower the overall profile without impacting the putting green.