Size Chart: 6.5=245mm/label 39=9.65in 7.0=250mm/label 40=9.85in 8.0=255mm/label 41=10.04in 8.5=260mm/label 42=10.24in 9.5=265mm/label 43=10.43in 10.0=270mm/label 44=10.63in 11.0=275mm/label 45=10.83in 12.0=280mm/label 46=11.02in the product characteristics:Breathable,Sweat-Absorbant,Hard-Wearing,Anti-Odor,Durable and comfortable. Breathable mesh Breathable fabric for a breathable,circulation system to keep your feet dry and fresh. Anti-kick design Provides the optimum cushioning performance that creates a cooler, drier and healthier shoe environment Lace up and slip on style Simple and easy to put on and take off design to help you move easily and comfortably Anti-slip texture design The anti-slip texture of the sole can provide effective grip and slip resistance, providing better sports performance