Under Armour consulted J.J. Rivet, a biomechanics expert at the European Tour Performance Institute, in the design of its Spieth 3 shoe after listening to input from its namesake, Jordan Spieth.
Under Armour used Rivet’s scientific insights into the torquing and rotation of the golf swing, and how it starts with foot stabilization and ground contact.
“JJ Rivet’s invaluable expertise and deep knowledge of the biomechanics of the golf swing helped the UA golf footwear team focus on specific key design elements in order to deliver the most technologically advanced golf shoe we’ve ever produced,” said Mike Forsey, director of global golf footwear for Under Armour.
The Spieth 3 is the lightest weight Spieth golf shoe to date, while maintaining stability and structural support after three essential elements were determined.
Traction to support the swing
When a golfer swings, the forefoot rotates laterally and the heel rotates in the medial direction.
When the swing comes back to impact, the foot wants to twist out from under the golfer, resulting in foot slippage.
The Spieth 3 uses patented rotational resistance and traction, both vertically and horizontally, to keep the feet on the ground as long as possible. The golfer is able to use the ground for leverage to power the swing and prevent slipping, leading to improved control and minimal power loss.
“Traction is what separates golf footwear from street shoes,” said Forsey.
“Under Armour Golf continues to be the only golf footwear brand speaking to traction to support the golf swing. With the Spieth 3, we’ve added vertical traction elements, which allow the golfer to naturally harness vertical force to bring more power to the ball at impact,” said Forsey.
At Spieth’s request, the overall weight of the Spieth 3 is significantly lighter than past models. To provide the most comfort and stability when walking the course, the Spieth 3 has an upper with microfiber in the heel and a woven jacquard in the forefoot.
The Spieth 3 was given a waterproof and breathable membrane designed to release perspiration while keeping water from entering.