Waterproof 8L bike frame triangle bag with reflective detail and secure strap fit. Ideal for MTB, road cycling and bikepacking in wet conditions.

Waterproof 8L bike frame triangle bag with reflective detail and secure strap fit. Ideal for MTB, road cycling and bikepacking in wet conditions.

Designed for riders who need stable in-frame storage, this waterproof triangle bike bag maximises unused frame space while keeping essential gear protected from rain and road spray. Built from durable 600D polyester with a TPU waterproof layer, it offers dependable weather resistance for commuting, gravel riding, and long-distance touring.

The streamlined triangular profile fits neatly within the main frame, reducing wind resistance and avoiding interference with pedalling. With up to 8 litres of storage capacity, there is room for tools, tubes, snacks, gloves, power banks, or lightweight layers without overloading your handlebars or saddle.

High-frequency welded construction improves rain protection, while sealed stitching helps prevent moisture ingress during wet rides. Adjustable hook-and-loop mounting straps create a secure attachment to the top tube, seat tube, and down tube, reducing sway on rough terrain.

Reflective detailing enhances visibility in low-light conditions, supporting safer early morning and evening rides. The structured body helps the bag retain its shape even when partially loaded, making access easier while riding or during quick stops.

Suitable for MTB, road bikes, gravel bikes, and bikepacking setups, this triangle frame bag provides balanced weight distribution and practical waterproof storage for riders who demand reliable performance in changing conditions.

SPECIFICATIONS

• Brand: ROCKBROS
• Model: AS-017
• Capacity Options: 5L / 8L
• Material: 600D polyester with TPU waterproof layer
• Weight: Approx. 180 g / 276 g
• Mounting: Adjustable strap system
• Features: Rainproof, reflective detailing, large capacity
• Fit: MTB, road bike, gravel bike

This waterproof triangle bike bag delivers secure, frame-mounted storage for riders who value stability, weather protection, and efficient use of space on every ride.