Universal Compatibility: This adjustable strap bracket holder is designed to securely mount your portable Bluetooth speaker to any mountain bike. Enjoy music without the worry of losing your device.Adjustable Length: The bluetooth speaker holer features an adjustable length, which is suitable for various bike frame and water bottle cages, making it easy to install and adjust the position. Construction: Made with high-quality materials, our bike speaker mount withstands rough terrain and weather, ensuring your speaker stays safe during rides. Easy to Install: The mount features an adjustable strap that easily attaches to any bike frame in seconds, no tools required. Its flexibility allows for quick adjustments and removal. Enhanced Riding Experience: Enhance your biking adventures with your favorite tunes. This mount ensures your speaker remains in place, providing uninterrupted sound quality, no matter the trail. Multifunctional Design: The adjustable water bottle strap features a multifunctional design, which can be used not only for securing speakers but also as a water bottle strap, offering high practicality. Color: Black Material: Polyester Size:L Package Contents: 1 x Bike Speaker Mount Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.