How should brands choose between lined, linerless, and compression-liner shorts?

 Brands should choose the liner structure based on product role, movement scenario, coverage needs, and target customer preference. Lined shorts can add support and reduce friction during training or running. Linerless shorts may feel lighter and easier for all-day activewear. Compression-liner shorts can support coverage, phone storage, and anti-chafe comfort, but they require careful review of liner length, fabric recovery, seam placement, and waistband pressure during sampling.