Some pre-sale items are shipped via international express, which may result in longer delivery times and additional shipping fees. Exact details will be shown at checkout.
We offer a 14-day return and exchange policy from the date you receive your item. Items must be unused, undamaged, with tags attached, in original packaging, and accompanied by proof of purchase.
We cover return shipping for quality issues, defective, damaged, or incorrect items, size-related returns, oversized items such as roof racks, and approved exchanges. For other personal-reason returns, the customer is responsible for return shipping.
For full order cancellations within 14 days, the original standard delivery cost will be refunded. Partial returns generally do not include a refund of the original delivery cost.
Refunds will be processed within 5–7 business days after we receive and inspect your return. Please contact us before returning any item. For questions, email service@rockbrossport.co.uk.
Estimated delivery time
Designed for performance-focused riders, this waterproof bike top tube bag offers fast, one-handed access to your essentials while riding. Featuring a magnetic quick-open system and a streamlined shape, it allows you to grab items like energy gels, snacks, or small tools without stopping.
Ideal for road cycling, commuting, and long-distance rides, it combines convenience, protection, and stability in one compact design.
The magnetic closure system allows you to open and close the bag effortlessly with one hand while riding. Perfect for quickly grabbing energy gels or essentials without interrupting your ride.
Constructed with high-frequency seamless welding technology, this top tube bag provides reliable waterproof performance, keeping your belongings dry in rain and wet conditions.
The large flap opening gives you a clear view of the contents, making it easy to organise and quickly access items without searching inside the bag.
Equipped with a knob tightening system and high-strength straps, the bag stays firmly in place even on rough terrain while allowing quick installation and removal.
The slim and aerodynamic shape fits closely to the frame, preventing leg interference and reducing drag for a smoother riding experience.
The magnetic closure eliminates the need for zips, reducing the risk of jamming or wear over time while improving long-term durability.
Functions & Features
High-frequency seamless welding and 600D polyester laminated TPU. High-density and wear-resistant. Suitable for daily commut-ing and long-distance travel.
Easy to open and close without effort to unzip the zipper. Compared with traditional zippers. There is no need to worry about the risk of zipper rust and damage.
The magnetic clamshell fits tightly to prevent items from falling accidentally
Easy storage
Flip-cover large opening. Easily distinguish the location of the items in the bag, no need to rummage through
Knob tightening design
High-strength tie rope. Quick disassembly and assembly, say goodbye to cumbersome processes, easy and fast installation.
Pull the knob outward to release the tie rope
Pull out part of the tie rope to fit the handle and beam
Wrap the straps around the handle and beam and buckle into the buckle
Press down the knob and rotate clockwise to tighten
Road To Sky
600D polyester laminated with TPU
0.6L/0.9L
150g(0.6L)/170g(0.9L)
100% Waterproof
A: Yes. The bag uses high-frequency seamless welding technology to provide reliable waterproof protection. It keeps your belongings dry when riding in rain, mud or wet conditions.
A: No. The strong magnetic closure is designed to stay securely shut even on rough terrain. It allows quick one-hand access while preventing the bag from accidentally opening during rides.
A: Yes. The bag features a knob tightening system and adjustable straps that allow quick installation without tools. It can fit securely on most road bikes, mountain bikes and commuter bicycles.
A: The bag is perfect for carrying daily riding essentials such as your phone, repair tools, wallet, keys, energy bars or small cycling accessories.
A: No. The slim, streamlined side design fits closely to the bike frame and prevents leg interference, ensuring a comfortable riding experience.
A: Yes. The adjustable mounting system allows it to fit most bike frames, including road bikes, mountain bikes and many e-bikes.
