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🎁 Buy 2+ Bike Bags, Get 15% Off Each
Shipping Fees:
We provide clear and detailed shipping fees based on the order amount and shipping method:
- Standard Shipping:
- Order Amount Below $29: Shipping Fee - $4.99
- Delivery Time: 3-4 business days
- Free Shipping:
- Order Amount $29 and over: Free 📦
Shipping Info
- US Warehouse In-stock: 3–4 business days
- 🌍International Shipping (if US out of stock): 7–10 business days
- 🚲Bicycles: 20–25 business days
Please note that we do not charge any additional taxes.
We offer a 30-day hassle-free return and exchange policy starting from the date you receive your item. To be eligible, products must be unworn, unused, with tags attached, in original packaging, and accompanied by proof of purchase. If the item is defective, damaged, or incorrect, we cover the return shipping cost; for size or personal preference returns, the customer is responsible for shipping fees. Please inspect your order within 72 hours and contact us for any issues. EU customers have a 14-day no-questions-asked return right. Refunds will be processed within 10 business days after we receive and inspect your return. Please contact customer service before returning items and send returns to the designated address; unauthorized returns will not be accepted. For questions, email service@rockbrosbike.us.
At ROCKBROS, we offer a worry-free 1-year warranty to ensure your satisfaction. Whether it's a defect or product issue, simply reach out to us at service@rockbrosbike.us with your order details. We'll handle the rest to make sure your experience is smooth and hassle-free.

Product Highlights
Product Description
ROCKBROS Bike Saddle Bag Waterproof with Brake Sensor Tail Light
Elevate your cycling adventures with our ROCKBROS Bike Saddle Bag! This cheeky little storage solution isn't just waterproof—it comes with a smart brake sensor tail light that practically shouts "Hey, I'm stopping!" to everyone behind you. Perfect for those who want to keep their gear dry and their presence known on the road. Safety never looked so fun!
Features
Integrated Tail Light for Safer Night Riding
Featuring an innovative embedded press-to-activate tail light, this saddle bag enhances visibility in low-light conditions. Easy to operate and install, it offers added safety and peace of mind during night rides.
Dual-Mount System: Bracket and Strap Fixation
Designed for hassle-free installation, the bag uses a two-point mounting system — a bracket combined with secure straps — ensuring a stable, wobble-free fit even on rough terrain.
Fully Waterproof Construction for All-Weather Protection
Constructed with waterproof 600D polyester laminated with TPU and sealed using high-frequency welding technology, the bag offers superior protection against rain and road spray. Seamless craftsmanship minimises the risk of water ingress, keeping your gear dry in unpredictable weather.
0.66L Capacity Ideal for Daily Commutes
With a practical 0.66-litre volume, the bag accommodates everyday essentials. A wide opening design allows for easy access and efficient storage, making it perfect for commuting or short rides.
Structured Design with Durable Silk-Screened Finish
The bag maintains its shape thanks to its robust build, while the abrasion-resistant surface resists deformation and pressure. Finished with unique silk-screened graphics, it adds a touch of personality while providing reliable protection for your gear.
Product Specifications
Brand | ROCKBROS |
Material | 600D Double-Sided Black TPU-Coated Nylon Frame |
Capacity | 0.66L (Compact Storage for Essentials) |
Weight | 112g (Net Bag Weight) |
Dimensions | 18x8x8cm |
Tail Light Specifications
Material | ABS+PC Reinforced Polymer |
Weight | 14g |
Dimensions | 29×29×22mm |
Charging | 5V/2A USB-C Input |
Battery | 3.7V 250mAh Li-Polymer |
Runtime | 18-110hrs (Adjustable Modes) |
Accessories Included
CBL01 Tail Light Unit |
Adjustable Seatpost Mounting Bracket |
3mm Hex Wrench (Tool) |