I joined FLX Rewards at Foot Locker. May I still use my benefits at Champs Sports? Absolutely. Your membership status and benefits follow no matter where you shop across the Foot Locker family of brands. Related articles How I do I manage my FLX Rewards account? How long does it take for my FLX points to show on my account? How do I use my points to save with FLX Cash? What are Xtra Boosts? How many points do I need to use FLX Cash?