Saucony RXT Running Burn Short Mens Fit: Semi-Fitted--Slim, contoured fit for ease of movement and a stylish look. Ventilation--Mesh or breathable fabric inserts in high heat zones allow sweat to evaporate and cool air to circulate. Reflectivity--Provides visibility in low-light conditions through the use of reflective fabrics, yarns, tapes, trims, or heat transfers. Fabric Content: 100% polyester Inseam: 7 Inches