Universal Compatibility: This adjustable strap bracket holder is designed to securely mount a portable Bluetooth speaker to a mountain bike. Enjoy music while riding without worrying about losing your device. Adjustable Length: The speaker holder features an adjustable strap, suitable for various bike frame sizes and water bottle cage positions, making installation and positioning easy. Durable Construction: Made with high-quality polyester material, this bike speaker mount withstands outdoor conditions and rough terrain, helping keep your speaker secure during rides. Easy to Install: The mount uses an adjustable strap that attaches quickly to most bike frames—no tools required. It allows for simple adjustments and removal. Enhanced Riding Experience: Listen to your favorite music while biking. This mount helps keep your speaker stable for consistent sound performance on different trails. Multifunctional Design: The adjustable strap can be used to secure a Bluetooth speaker or function as a water bottle strap. Color: Black Material: Polyester Size: L/S Package Contents: 1 x Bike Speaker Mount Note: Color may vary slightly due to screen settings and lighting. Measurement tolerance is +/- 1–3 cm.