Safety is the highest priority in children's apparel. You must ensure products comply with CPSIA (Consumer Product Safety Improvement Act) for the US market, which regulates lead and phthalate content, or the REACH regulation for the EU. Additionally, pay close attention to physical safety standards such as ASTM F1816-97 regarding drawstrings on children's upper garments to prevent strangulation hazards, and ensure all small parts (buttons, snaps, sequins) pass a 90-Newton pull test to prevent choking risks.