The Wilson Rush Pro 4.5 builds on the proven innovations of the 4.0 with new upgrades that improve breathability, support and abrasion resistance. An engineered mesh upper uses a graduated pattern with larger holes toward the forefoot for airflow and tighter mesh toward the heel for support. A larger, integrated medial mud guard and enlarged lateral drag pad protect against abrasion, while the Lightweight Energy Cell EVA midsole cushions impact and helps you spring back into position. The 4D Support Chassis 2.0 with a split skeleton provides stability and control during dynamic movements. Suitable for clay, hard and all-court surfaces.