When sourcing nurse shoes, prioritize slip resistance (SRC rating) to ensure safety on wet or oily hospital floors. The upper material should be breathable and water-resistant, such as high-grade microfiber or treated leather, to withstand fluid spills. Look for ergonomic arch support and shock-absorbing EVA or memory foam midsoles to reduce fatigue during 12-hour shifts. Additionally, ensure the shoes feature anti-static (ESD) properties if they are to be used near sensitive medical electronic equipment.