1. Product Overview
The NEWBOLER Waterproof Bicycle Saddle Bag is designed to provide secure and convenient storage for your cycling essentials. Made from durable EVA and polyester fiber, it features a hard-shell design, waterproof construction, and reflective elements for enhanced safety. Available in multiple capacities to suit various needs.

Figure 1: NEWBOLER 5L Bicycle Saddle Bag (Model BAG690)
2. Setup and Installation
The saddle bag features a simple and secure installation process using Magic Tape straps. Ensure the bag is empty before installation for easier handling.
2.1 Magic Tape Installation (Models BAG690, BAG043, BAG044)
- Position the Bag: Place the saddle bag under your bicycle seat, ensuring the top strap aligns with the saddle rails and the rear strap aligns with the seat post.
- Attach Top Strap: Wrap the top Magic Tape strap(s) securely around the saddle rails. Ensure a snug fit to prevent movement.
- Attach Rear Strap: Wrap the rear Magic Tape strap securely around the seat post. Pull tightly to eliminate any slack.
- Verify Stability: Gently shake the bag to ensure it is firmly attached and does not wobble. Adjust straps as necessary.

Figure 2: Simple Two-Step Quick Installation

Figure 3: Detailed Installation Steps
2.2 Taillight Attachment
The saddle bag features a dedicated slot for attaching various bicycle taillights, enhancing your visibility and safety during night rides.
- Locate the taillight mounting slot on the rear of the saddle bag.
- Insert your compatible taillight into the slot until it clicks or is securely fastened.
- Ensure the taillight is facing directly backward for maximum visibility.

Figure 4: Taillight Attachment Point
2.3 Installation Video Guide
Video 1: Product demonstration and installation guide.
3. Operating Instructions
3.1 Storage and Capacity
The saddle bag offers ample storage for various cycling essentials. Utilize the main zipper compartment to store tools, spare tubes, personal belongings, snacks, or a light jacket.

Figure 5: High-Capacity Design for Daily Travel Needs
3.2 Waterproof Features
The bag is constructed with waterproof fabric and features a seamless waterproof zipper to protect your belongings from rain and splashes.
- Ensure the zipper is fully closed to maintain water resistance.
- While designed for rain, avoid prolonged submersion.

Figure 6: Waterproof Fabric and Seamless Waterproof Zip
3.3 Reflective Safety
The bag incorporates a reflective logo design to enhance your visibility to others, especially during low-light conditions or night riding.

Figure 7: Reflective Warning Logo for Night Safety
4. Maintenance
- Cleaning: Wipe the exterior of the bag with a damp cloth and mild soap if necessary. Do not use harsh chemicals or abrasive cleaners.
- Drying: If the bag gets wet, allow it to air dry completely in a well-ventilated area before storing. Do not machine wash or tumble dry.
- Zipper Care: Periodically check the zipper for any debris and clean it gently. Lubricate with a silicone-based lubricant if the zipper becomes stiff.
- Storage: Store the bag in a cool, dry place away from direct sunlight when not in use.
5. Troubleshooting
- Bag feels unstable or wobbly: Re-tighten all Magic Tape straps around the saddle rails and seat post. Ensure they are pulled as tight as possible without damaging the bike components.
- Water leakage: Ensure the zipper is fully closed and free of any obstructions. Inspect the bag for any tears or damage to the fabric or zipper.
- Taillight does not fit or is loose: Verify that your taillight is compatible with the universal mounting slot. Some taillights may require an adapter (not included). Ensure the taillight is securely clicked into place.
- Zipper is stiff or stuck: Clean the zipper teeth with a small brush to remove any dirt or grit. Apply a small amount of zipper lubricant (e.g., silicone spray) to the teeth and work the zipper back and forth.
6. Specifications
| Feature | Description |
|---|---|
| Brand | NEWBOLER |
| Type | Saddle Bag |
| Material | EVA + Polyester Fiber |
| Function | Rainproof, Reflective |
| Mounting | Magic Tape Straps |
| Color | Black |
| Origin | Mainland China |
6.1 Model-Specific Specifications
| Model | Capacity | Dimensions (L x W x H) | Weight |
|---|---|---|---|
| BAG690 | 5 Liters | 30 cm x 17 cm x 12 cm | 271 g |
| BAG043 | 1.5 Liters | 18 cm x 9.5 cm x 13 cm | 156 g |
| BAG044 | 2.5 Liters | 20 cm x 11 cm x 14 cm | 177 g |

Figure 8: Model Comparison (Capacity, Dimensions, Weight)
7. User Tips
- Choose the Right Size: Consider your typical ride length and what you need to carry. Smaller bags (1.5L, 2.5L) are great for daily essentials, while the 5L bag is ideal for longer rides requiring extra gear like a windbreaker, tools, and more snacks.
- Maximize Space: Even the larger 5L bag can be optimized. Pack heavier items at the bottom and closer to the seat post for better balance.
- Secure Contents: While the bag is sturdy, consider wrapping delicate items in a cloth or small pouch to prevent rattling or damage on rough terrain.
- Regular Checks: Periodically check the tightness of the mounting straps, especially after riding on bumpy roads, to ensure the bag remains secure.
8. Warranty and Support
For any questions, concerns, or support regarding your NEWBOLER Waterproof Bicycle Saddle Bag, please contact the seller or retailer from whom you purchased the product. They will be able to provide assistance with product-specific inquiries and warranty information.