Quick rack mount
Adjustable clips help the rear bike pannier attach to most standard racks.



















































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
🚲 Bicycle Shipping
Delivery Times:
Shipping Fees:
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 2-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.

A waterproof rear rack pannier for commutes, errands, and wet rides.
This rear bike rack bag is built for riders who need predictable storage, fast removal, and waterproof bicycle bag protection for work gear, tools, groceries, and weekend cargo.
Fits a laptop sleeve, charger, jacket, repair kit, and daily gear.
Best for daily commuting, one-bag grocery runs, and riders who want a waterproof bike rack bag without loading both sides of the rack.
A cleaner, lighter waterproof story: fast sealing, stable shape, and easy stop-and-go use.
Roll it closed, clip it down, and keep daily gear organized on the bike.
Simple hardware, sealed storage, and commuter-ready details for a waterproof rear rack bike bag.
Adjustable clips help the rear bike pannier attach to most standard racks.
Main cargo room for daily gear, grocery errands, tools, and weekend riding layers.
A support panel helps the waterproof bicycle pannier hold shape under load.
Subtle reflective areas improve visibility during evening stops and wet road rides.
Lift the pannier off the rack and carry it into the office, shop, or campsite.
Keep gloves, a light layer, or damp quick-access items outside the main compartment.
Use the size chart and specs below to check fit, capacity, and rack setup.
A practical guide to capacity, waterproof construction, rack fit, balance, and everyday riding setup.
Compare rear bike panniers, waterproof bicycle bags, commuting setups, and bike touring storage before you choose your rack bag.
Quick answers for rack fit, wet-weather use, capacity, and commuting setup.
No separate rain cover is needed for normal wet-weather riding. Roll the top down, buckle it tightly, and keep the opening compressed.
One bag works for commuting and errands. A pair setup helps balance heavier loads for bike touring, grocery runs, and longer cargo rides.
The pannier is designed for most standard rear bicycle racks with adjustable clips and a rotating lower bracket. Check your rack spacing before riding fully loaded.
It can carry daily commuter gear, tools, clothing layers, groceries, and weekend riding essentials. Use a separate sleeve for laptops or fragile electronics.