1. Introduction
This manual provides comprehensive instructions for the proper setup, operation, and maintenance of your ROCKBROS Waterproof Bike Saddle Bag, Model AS-012. Designed for bikepacking and cycling, this bag offers a maximum capacity of 14 liters and features a durable, waterproof construction.
Key Features:
- Adjustable & Foldable Capacity: Max 14L, with a roll-top closure design to adjust length and meet various storage needs.
- Waterproof & Easy to Clean: Constructed from composite 3-layer waterproof material, allowing dirt or mud to be cleaned with a wet cloth.
- Easy Installation: Features fixed buckles and straps for secure attachment under the seat, requiring no tools. Compatible with various bike types including road, mountain, dirt, BMX, and MTB.
- Enhanced Visibility: Equipped with reflective straps to increase night visibility during cycling. The bag can also function as a fender in heavy rain to reduce water splashing.
- Keel Support Design: Built-in internal steel support helps the bag maintain its shape and protects contents from compression.
2. Setup and Installation
Follow these steps to correctly install your ROCKBROS Waterproof Bike Saddle Bag:
- Prepare the Bag: Ensure the bag is empty or packed as desired before installation. The roll-top closure should be secured to prevent items from falling out.
- Attach to Saddle Rails: Locate the two main straps with buckles at the top of the bag. Thread these straps through the saddle rails of your bicycle seat. Secure the buckles tightly.
- Secure to Seat Post: Wrap the Velcro straps located at the front of the bag around your bicycle's seat post. Ensure these straps are fastened securely to prevent swaying during rides.
- Adjust for Stability: Once all straps are attached, pull them tight to minimize movement and ensure the bag is stable. The internal keel support helps maintain the bag's shape.

Figure 2.1: ROCKBROS Waterproof Bike Saddle Bag securely installed on a bicycle.

Figure 2.2: The bag is compatible with various seat post types, including round and aero designs, requiring at least 7 inches of clearance from the saddle to the tire.
Installation Video:
Video 2.1: Official ROCKBROS installation guide for the Large Bike Seat Bag, demonstrating how to attach it to the saddle and seat post.
3. Operating Instructions
Adjusting Capacity:
The bag features a roll-top closure system, allowing you to adjust its capacity from a smaller size to its maximum 14L. To adjust, simply roll the top opening more or less before securing the buckles. This flexibility accommodates different amounts of gear for various trip lengths.

Figure 3.1: The bag's roll-top design allows for flexible capacity adjustment, from a compact size to its full 14L.
Packing and Access:
Utilize the large main compartment for bulkier items. The internal keel support helps maintain the bag's structure even when fully loaded. For quick access, consider placing frequently used items near the opening.

Figure 3.2: The 14L capacity is suitable for carrying daily necessities, cycling equipment, energy replenishment, and repair tools.
Visibility Features:
The bag includes reflective elements for increased safety during night rides. Additionally, the design allows it to act as a fender, reducing mud and water splash on your clothing.

Figure 3.3: Key details include a reflective sign for night visibility and a dedicated loop for attaching a tail light.
4. Maintenance
Cleaning Instructions:
Due to its innovative waterproof material, the bag is easy to clean. Simply wipe off any dirt or mud with a damp cloth. Avoid using harsh chemicals or abrasive cleaners, as these may damage the waterproof coating.
Storage:
When not in use, ensure the bag is clean and dry before storing. Store in a cool, dry place away from direct sunlight to prolong its lifespan.
5. Specifications
| Feature | Detail |
|---|---|
| Brand | ROCKBROS |
| Model Number | AS-012 |
| Capacity | Max 14 Liters |
| Material | 600D Nylon + Waterproof TPU Film |
| Product Dimensions | 30.91"L x 14.57"W x 5.91"H |
| Item Weight | 16 ounces (1 pound) |
| Mounting Type | Seat Mount |
| Closure Type | Buckle (Roll-top) |
| Number of Compartments | 1 |
| Special Features | Adjustable Capacity, Waterproof, Reflective Elements, Internal Keel Support |
6. Troubleshooting
If you encounter any issues with your ROCKBROS Waterproof Bike Saddle Bag, please refer to the following common troubleshooting tips:
- Bag is swaying: Ensure all straps (saddle rail and seat post) are tightened securely. Adjust the position of the bag to achieve optimal balance and stability.
- Items getting damp: Verify that the roll-top closure is properly rolled down at least three times and all buckles are fastened tightly to maintain the waterproof seal.
- Difficulty fitting items: Utilize the adjustable roll-top closure to expand the bag to its full 14L capacity. Pack items efficiently, placing bulkier items first.
Additional Video:
Video 6.1: A short preview demonstrating the bag's features and quality when mounted on a bicycle.
7. Warranty and Support
For warranty information or further support regarding your ROCKBROS Waterproof Bike Saddle Bag, please refer to the official ROCKBROS website or contact your retailer. Keep your proof of purchase for any warranty claims.
For general inquiries or to explore other ROCKBROS products, visit the ROCKBROS Store on Amazon.