Callaway Men's Nitro ACE Spikeless Golf ShoesCallaway Footwear Men's Nitro ACE Golf Shoes (Spikeless Model) Introducing golf shoes from CALLAWAY. Callawy Nitro Ace has a clean design with a simple toe area for less coverage on your foot. With an impressive line design on the heel, this spikeless model can be coordinated with a wide range of apparel. The outsole uses "HEX Dynamic Pattern Outsole" with a hexagonal pattern. The hexagonal pattern flexes dynamically according to the road conditions