When sourcing premium strollers, you must prioritize ASTM F833 (US) or EN 1888 (EU) compliance, which covers structural integrity and entrapment hazards. Key technical features include advanced all-wheel suspension systems, five-point safety harnesses, and multi-terrain wheel durability (typically using puncture-proof PU or EVA foam). Ensure the frame is made of aviation-grade aluminum for a high strength-to-weight ratio, and verify that fabrics meet OEKO-TEX® Standard 100 for chemical safety against infant skin.