The choice should depend on the brand's target customer, product role, and first capsule strategy. Hybrid training wear works well for brands building run / train / recover capsules. Compression wear needs stronger attention to compression level, recovery, coverage, waistband pressure, and seam placement. Gym-to-street basics are better for brands that want performance tees, lined shorts, joggers, hoodies, and track pants with all-day wearability. Each direction should lead to different fabric and sample priorities.