Nike designers worked for approximately sixteen years to create the revolutionary Shox technology.

The principle behind Shox technology is simple. When the heel strikes the ground, the Shox columns absorb the energy of the strike and compress like a spring which bounces back and returns the energy to the wearer as they transfer their weight to the forefoot in preparation for the next stride. Out of all the Shox running shoes, the R4 is one of the most popular and successful with serious runners. The Nike Shox R4 features a two piece, track inspired upper a great, lightweight, breathable fit while the full-length internal Phylon midsole and forefoot Air-Sole unit provide a smooth ride, and this Nike running shoe is designed for the neutral runner in need of maximum cushioning and impact protection.

The Nike Shox R4 running shoe has been the most successful shoe in the Nike Shox lineup. The shoe was available in a variety of colors. The R4 has been released several times and is the only shoe in the original lineup to have been released several times.