You’re constantly in motion when you’re running outside: your body, your arms, your chest, everything is moving. With traditional bras that have removable pads, there’s always that annoying risk of shifting or bunching. The pads can slide out of place, fold over, or create awkward shapes. https://www.buzznewslive.com/business/why-a-sports-bra-with-sewn-in-pads-is-the-best-choice-for-outdoor-running/