Universal Compatibility: This adjustable strap bracket holder is designed to securely mount your portable Bluetooth speaker to any mountain bike. Enjoy music on the go 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. Durable 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/S 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.