When sourcing radiation suits, the most critical factor is the shielding material and its lead equivalence (Pb). For medical X-ray protection, a standard of 0.25mmPb, 0.35mmPb, or 0.5mmPb is typically required. You must also evaluate the material composition, choosing between traditional lead, lightweight lead, or lead-free (non-lead) options depending on the wearer's mobility needs. Additionally, ensure the outer fabric is waterproof, antibacterial, and easy to decontaminate to maintain hygiene in clinical or industrial environments.