A US shapewear brand came to S·KAIFEI in March 2025 with a $40,000 Amazon launch budget and three SKUs planned. They had a private label quote at $6.80/piece from a Vietnamese trading company, and they wanted to know if the top-tier Chinese factory was worth the $9.20/piece gap. The answer: 4.2% return rate versus 11.8% on the same Amazon listing across 90 days. The brand is now on its fourth reorder.

That gap drives most private label bbl compression shorts conversations in 2026. Private label is the default entry point for new shapewear labels, but the spread between top-tier and mid-tier suppliers has widened, and the cost of picking wrong is no longer just margin — it is Amazon review velocity, return rate, and brand reputation.