Hard and shatterproof bicycle frame bag that enhances ride comfort by better handling pressure and absorbing shocks. - Weather protection: Built with weather-resisting materials to reduce rainwater ingress. Not fully waterproof; do not submerge the bag in water. It helps keep contents dry on rainy days, but water exposure should be limited. - Safety design: Reflective material increases visibility at night, helping other road users notice you and improving safety during low-light rides. - Interference-free fit: Professional triangular protection design allows the bag to integrate with the bicycle frame smoothly, so your legs are not hindered while riding. - Easy access and organization: Zipper closure provides quick access. Inside, there are two mesh pockets on opposite sides to keep different items separated and secure, so nothing falls out at high speeds. Use scenarios - Daily commuting and quick errands: keeps essential items within reach without getting in the way. - Road or mountain rides: organized interior pockets keep tools, snacks, or small accessories neatly arranged. - Night or variable-weather rides: reflective surface enhances visibility and reliable protection for your belongings in light rain.