SCOSCHE RAB19LGB Large RHYTHM with replacement strap, (Black) Replacement strap for RHYTHM+ Sweatproof & Waterproof Breathable lightweight armband comfortably secures your Rhythm in place Large measures 15" in length and 1" wide. hook-and-loop end fasteners SHOP WITH CONFIDENCE: Backed by Scosche's 12 month worry-free warranty and friendly customer service