The Quad Lock sports armband opens up new possibilities for joggers and fitness enthusiasts. You no longer have to struggle to fit your smartphone into a neoprene armband or a plastic case. With the Quad Lock locking system, your smartphone is securely attached to your arm with just one click. No other sports armband allows you to attach and detach your smartphone as quickly as the Quad Lock sports armband. It is the lightest and most robust mounting system available on the market. It features a two-stage patented locking mechanism and is the safest and most reliable way to secure your smartphone. The click lets you know that your smartphone is securely fastened.