Scenario: Sarah wears a 34C bra and wants to find her sports bra size for running (high impact).
Step 1: Enter band size 34 and cup C in the calculator.
Step 2: Select High impact level for running.
Step 3: Review brand recommendations — Lululemon recommends M, Nike recommends M, Athleta recommends M, Shefit recommends II, Panache recommends 34D (standard sizing), and Shock Absorber recommends S.
Pro tip: For high-impact activities, prioritize brands with higher support ratings. Panache and Shock Absorber tend to offer the best high-impact support for this size.