Crafted with high-frequency seamless welding and waterproof materials, this bag provides rainstorm-level protection, ensuring your items stay completely dry even on long rides.

The streamlined narrow-sided design prevents the bag from touching your legs while riding, offering both comfort and speed. Its built-in PP support plate keeps the bag upright and protects your belongings from being squeezed, while the side-opening zipper allows quick, one-handed access.

With a ≈1.9L capacity, it’s perfect for storing daily necessities and small travel items. Three-point Velcro straps make installation simple and secure without any tools, and the bag fits most road and gravel bike frames M size and above without affecting water bottle cage use.

Durable and convenient, this bag features tear-resistant fabric, a lengthened zipper pull, a rain-protective zipper strip, and a reflective logo for night riding safety. Whether commuting, cycling, or exploring outdoors, the ROCKBROS Down Tube Bag is your reliable companion.

Specifications:

• Material: Bag body 30% nylon + 70% polyester; Support plate: PP
• Weight: ≈195g (with straps)
• Compatible Bikes: Road bikes, Gravel bikes