Babolat Men`s Propulse Blast Tennis Shoes are engineered for supportive, comfortable performance. Upper:Synthetic materials and mesh combine for a comfortable, supportive fit. Two Power Straps lock down the midfoot region for ultimate lateral stability. Insole:The lightweight Ortholite insole offers state-of-the-art cushioning, moisture management, and breathability. Midsole:KPRS-X technology features a high-cushioning EVA pad optimized for heel protection on the court. Outsole:The Michelin Performance outsole utilizes special DIN 35 rubber studs for greater stability. The outsole also wraps up the toe and medial forefoot for additional protection against toe dragging.