A buyer guide for boutique founders and small-batch private label brands evaluating period underwear suppliers before committing to a first program — what micro-brand differentiation looks like at 200 pieces versus 3,000, how to brief a factory on a laser-cut or shaping-led SKU, and where boutique positioning diverges from mass-market category leaders.

A U.S. private label buyer's guide to evaluating overseas manufacturers on customs clearance, Amazon compliance, Prop 65, and landed cost — before the bulk PO is signed.