Keep your smartphone secure and accessible during every run or workout with the Quadlock Sports Armband. Engineered for high-intensity activity, this armband features a patented dual-stage lock that ensures your phone remains firmly attached while you move. The lightweight design provides a comfortable fit, featuring an adjustable strap that accommodates arm circumferences from 17cm to 38cm, making it suitable for a wide range of users. Constructed from high-quality, hand-washable materials, it is designed to withstand rigorous training sessions while maintaining comfort against the skin or over activewear. Its minimalist, ergonomic profile reduces friction, allowing for a seamless experience whether you are hitting the gym or the trails. This armband is compatible with all Quadlock cases and Universal Adaptors, providing a versatile mounting solution for your fitness journey. Product Summary: Quadlock Sports Armband, phone running armband, secure smartphone mount, adjustable fitness arm strap, compatible with Quadlock cases, workout phone holder.