Barbie Doll Gradient Running Action refers to a unique product that combines the iconic Barbie doll with a dynamic, running-themed design. The 'gradient' aspect suggests that the Barbie doll's attire features a color transition, possibly giving it a futuristic or vibrant look. Running action implies that the doll is designed to be interactive, possibly with a pose or mechanism that simulates a running motion. This kind of product appeals to collectors and fans of the Barbie brand, as well as those interested in innovative toy designs.