Key technical factors include the outsole material and construction method. Rubber outsoles (especially 70%+ natural rubber content) provide better slip resistance and wear than TPR. Regarding construction, Strobel stitching offers maximum flexibility for athletic styles, while cupsole stitching (sidewall sewing) ensures the upper and sole do not delaminate, which is a hallmark of high-quality casual sneakers. Ensure the foam density of the insole (e.g., OrthoLite or high-rebound EVA) is specified to maintain comfort over time.