Quad Lock Armband Some Tricks Up Your Sleeve The Quad Lock Sports Armband is the easiest and most secure way to take your smartphone on your next run. Its twist-and-lock system allows for quick attachment and detachment, while the patented dual-stage lock ensures your phone stays firmly in place, no matter how hard you're heading toward the finish line. Features Patented dual-stage locking mountkeeps your phone securely in place through intense activity Quick twist-and-lock attachmentfor effortless on-and-off during a run Raised, friction-free fit- the dual-stage lock sits your phone slightly off the armband, so there's no friction between your arm and the device Nylon/Lycra strap constructionfor comfortable, breathable, all-run wear Adjustable to fit any arm sizefrom 17-38cm (6. 5"-15") in circumference Hand-washable materialfor easy care SPECIFICATIONSIntended Use Running, Gym, Training Material Nylon/Lycra strap Arm Circumference Range17-38cm (6. 5"-15")Compatibility All Quad Lock cases and Universal Adaptors (sold separately)Care Instructions Hand wash, cold water | Quad Lock | Armband Black, Blue | Nylon