Buyers should prioritize reinforced leg pockets, ideally made of double-layered elastic or Oxford fabric, to prevent tearing from chair legs. Check for overlocked or safety-stitched seams to ensure the covers do not fray under tension. For safety compliance, especially in public venues, verify if the material meets NFPA 701 (US) or BS 5852 (UK) flame retardancy standards. Additionally, confirm colorfastness ratings (Grade 4 or higher) to ensure dyes do not bleed onto expensive upholstery or guest clothing.