When sourcing slide sandals, the choice of materials directly impacts durability and comfort. For the outsole, EVA (Ethylene Vinyl Acetate) is preferred for its lightweight and cushioning properties, while PVC offers a more cost-effective but heavier alternative. For the upper, look for PU leather or textile straps with soft foam padding to prevent skin irritation. If targeting the premium market, ensure the footbed features an ergonomic arch support design to enhance wearer comfort during prolonged use.