When sourcing budget-friendly loafers, the primary material is usually Synthetic Leather (PU or PVC). To ensure quality, look for High-Peeling PU, which offers better breathability and crack resistance than standard PVC. For the outsole, TPR (Thermoplastic Rubber) is the most cost-effective choice as it provides a good balance of slip resistance and flexibility compared to cheaper, rigid plastics. Ensure the insole uses EVA foam with a thickness of at least 3mm to provide basic comfort for the end consumer.