1. Product Overview
The NEWBOLER Bicycle Saddle Bag is designed for convenient storage during cycling. It features a durable, waterproof construction and comes in various capacities and mounting options to suit different bicycle types and rider needs. This manual provides instructions for installation, usage, and maintenance.
Key Features:
- Durable Material: Constructed from EVA composite leather + spandex or EVA + Polyester fiber, providing a hard-shell structure that resists deformation.
- Waterproof Design: Features daily water-repellent fabric and seamless waterproof zippers to protect contents from rain.
- Reflective Elements: Integrated reflective logo for enhanced visibility and safety during night riding.
- Mounting Options: Available with quick-release mechanism (BAG057) for easy attachment and detachment, or secure Velcro straps (BAG043, BAG044) for stable fitting.
- Taillight Compatibility: Designed with a rear attachment point for an optional taillight (taillight sold separately) to further improve night safety.
- Capacity Options: Available in 1.5L and 2.5L sizes to accommodate various essentials like tools, spare tubes, and personal items.
Product Video Demonstration
Video demonstrating the saddle bag's features including EVA hard shell, Velcro installation, stability, waterproofing, reflective strip, and taillight attachment.
2. Specifications
General Specifications:
| Attribute | Value |
|---|---|
| Type | Saddle Bag |
| Function | Rainproof, Storage |
| Origin | Mainland China |
| Usage | Mountain bikes, Road bikes, Handheld |
Model Specific Specifications:
| Model | Material | Capacity | Weight | Dimensions (L x H x W) | Mounting |
|---|---|---|---|---|---|
| BAG057 | EVA composite leather + spandex | 1.5L / 2.5L | 1.5L (147g), 2.5L (176g) | 1.5L: 21.5cm x 13cm x 9.5cm (8.5in x 5.12in x 3.74in) 2.5L: 24.5cm x 14.5cm x 11cm (9.6in x 5.7in x 4.3in) | Quick Release |
| BAG043 | EVA + Polyester fiber | 1.5L | 156g | 21.5cm x 13cm x 9.5cm (8.5in x 5.12in x 3.74in) | Velcro straps |
| BAG044 | EVA + Polyester fiber | 2.5L | 177g | 24.5cm x 14.5cm x 11cm (9.6in x 5.7in x 4.3in) | Velcro straps |

Detailed dimensions and specifications for 1.5L and 2.5L models.
3. Installation
Important Pre-Installation Check:
Ensure your bicycle seat has sufficient clearance for the saddle bag. The distance between the two bars under the seat must be at least 5cm (1.97 inches) for proper bracket installation.

Saddle clearance and bracket dimensions.
Installation Steps for Quick-Release Models (e.g., BAG057):
- Step 1: Install the Bracket. Attach the metal plate to the saddle rails.
- Step 2: Secure the Bracket. Secure the quick-release bracket assembly to the metal plate using the provided screws and nuts. Ensure it is tightened firmly.
- Step 3: Attach the Bag. Slide the saddle bag onto the installed quick-release bracket until it clicks securely into place.
- Step 4: Secure the Strap. Wrap the Velcro strap around the seat post and fasten it tightly to prevent movement.

Detailed visual guide for quick-release installation.

Simplified three-step installation overview.

Included components for installation.
Installation Steps for Velcro Strap Models (e.g., BAG043, BAG044):
- Step 1: Position the Bag. Place the saddle bag under your bicycle seat.
- Step 2: Secure Top Straps. Wrap the top Velcro straps around the saddle rails and fasten them securely.
- Step 3: Secure Seat Post Strap. Wrap the rear Velcro strap around the seat post and fasten it tightly. The self-adhesive Velcro straps can be trimmed to fit your specific needs.
Ensure all straps are tight to prevent the bag from swaying or falling off, even on bumpy roads.
4. Operation
Attaching and Detaching (Quick-Release Models):
- To Attach: Align the bag with the installed bracket and push it upwards until it locks into place.
- To Detach: Press the release button on the bracket and slide the bag downwards to remove it. This quick-release design allows for easy assembly and disassembly.

Quick-release mechanism for easy removal.

Convenient quick-release design.
Waterproof Functionality:
The saddle bag is designed with daily water-repellent material and seamless waterproof zippers. This provides excellent rain protection, keeping your belongings dry even in rainy conditions.

Waterproof fabric and seamless zipper detail.
Night Safety Features:
The bag incorporates a reflective logo design that enhances visibility when illuminated by vehicle lights, making night riding safer. Additionally, a dedicated attachment point is available for an optional taillight (sold separately).

Reflective logo for improved night visibility.

Taillight attachment point (taillight not included).
5. Maintenance
- Cleaning: Wipe the exterior of the bag with a damp cloth and mild soap. Do not use harsh chemicals or abrasive cleaners. Allow to air dry completely.
- Zippers: Periodically check zippers for debris and ensure they operate smoothly. Clean with a small brush if necessary.
- Storage: When not in use, store the saddle bag in a cool, dry place away from direct sunlight to prolong its lifespan.
- Inspection: Regularly inspect mounting straps, buckles, or quick-release mechanisms for wear and tear. Replace if damaged to ensure secure attachment.
6. Troubleshooting
- Bag feels loose or sways:
- For quick-release models, ensure the bag is fully clicked into the bracket and the seat post strap is tight.
- For Velcro models, re-tighten all Velcro straps around the saddle rails and seat post. Trim excess strap if it interferes with a secure fit.
- Water inside the bag after rain:
- Ensure zippers are fully closed and properly aligned.
- Check for any tears or damage to the waterproof fabric or zipper seals.
- Difficulty installing the quick-release bracket:
- Verify that there is at least 5cm (1.97 inches) of clearance between the saddle rails for the bracket to fit.
- Ensure all screws and nuts are correctly aligned and tightened.
7. User Tips
- The 2.5L model is generally suitable for mountain bikes, while the 1.5L model is often preferred for road bikes due to size considerations.
- The bag offers ample space for essentials like a spare inner tube, tire levers, basic repair tools, a mini air pump, mobile phone, and wallet. Some users even fit a small water bottle.
- If the bag is not completely full, consider placing a soft cloth or padding inside to prevent items from rattling during rides.
- Before purchasing, measure the clearance under your saddle to ensure compatibility, especially for quick-release models requiring 5cm between saddle rails. Minor saddle adjustments might be necessary.
- The self-adhesive Velcro straps on certain models can be trimmed for a cleaner and more customized fit.
8. Warranty and Support
For any warranty claims, product support, or inquiries, please contact the seller directly. Specific warranty terms may vary and are typically provided by the retailer or manufacturer at the time of purchase.
An official user manual in PDF format is available for download. Please refer to the following link for additional detailed information: