I joined FLX Rewards at Champs Sports. May I still use my benefits at Foot Locker? Absolutely. Your membership status and benefits follow no matter where you shop across the Foot Locker family of brands. Related articles How do I manage my FLX Rewards account? I signed up for a Champs Sports account. Do I need to also sign up for FLX Rewards? How do I get free standard shipping? What are Head Starts? What is FLX Rewards?