Fit should be planned by product role, not copied across every SKU. A running top may need a lighter and closer fit, training shorts may need mobility and coverage, joggers may need a tapered gym-to-street shape, and midlayers may need enough room for layering. The collection should feel consistent, but each product must support its own use scenario. Before sampling, brands should confirm fit direction, size grading, inseam, sleeve shape, shoulder width, waistband structure, and layering allowance across the whole capsule.