When evaluating lightweight sports shoes, focus on the upper material, midsole technology, and outsole durability. The upper should ideally use breathable fly-knit mesh or TPU hot-melt films to reduce weight while maintaining structural support. For the midsole, look for Expanded Thermoplastic Polyurethane (E-TPU) or high-resilience EVA foam, which provide excellent energy return without adding bulk. The total weight for a standard size should ideally be under 250g per shoe for professional athletic use.