1. design for allweather protection This mountain bike frame bag is designed with a waterproof exterior, keeping your tools dry during rainy rides or wet conditions and providing reliable protection for your equipment. 2. Triangle bag for efficient storage: The triangular bag fits perfectly into your bike frame and a compact yet spacious storage solution for your tools, repair kits, snacks or small accessories, without being obtrusive. 3. Side zipper for easy access to items: With a convenient side zipper, this frame bag allows easy and quick access to your gear while riding, making it ideal for storing frequently needed items such as tire levers, patches or multitools. 4. Safe and stable for reliable performance: This frame bag is designed for stability and can be securely attached to your bike frame to ensure it stays in place even on rough terrain or highspeed rides, providing a reliable storage solution.