A method for finding the optimum distribution of the slit density in a shoe upper. such that the contact pressure with the foot approaches an ideal distribution is presented in this paper. In a shoe upper made of warp knitting. slits are made by discontinuously knitting the weft under a uniform arrangement of the warp fiber. https://www.roneverhart.com/Port-Company-Long-Sleeve-Performance-Blend-Tee-PC381LS-Port-Company-PC381LS/