The Nike GP Challenge 1 tennis shoes are designed for wear on hard court surfaces. They feature a forefoot Air Zoom unit, a heel Air Zoom unit, and a cushioned insole. A midfoot plastic plate provides stability and webbing around the eyestays combines with the plate to offer containment when moving side-to-side.
The heel is extra padded for comfort and support. Extra rubber in the toe area adds durability, while high-abrasion rubber in the forefoot offers durability and traction. The heel is designed for rocker-like movements, like pulling back for a serve.