ROCKBROS Bike Rack Bags – Hard Shell Bicycle Rear Rack Bag Large Pannier for Bicycle Rear Rack Bags Bike Rear Seat Bag Bike Trunk Bag Ebike Battery Bag Bike Saddle Bag for Rear Rack Bike Accessories
Original price was: $45.99.$39.99Current price is: $39.99.
Price: $45.99 - $39.99
(as of Oct 17, 2025 09:31:19 UTC – Details)
From the brand
ROCK means determination to be as tough as a rock and a belief that it would persevere and innovate no matter how hard it is;
BROS means that customer is like brother and sister, and we will accompany the customer like family. ROCKBROS adheres to the concept of providing fashionable, high-quality, comfortable and affordable products for everyone who loves cycling and healthy life, spreads a healthy cycling culture.
ENJOY CYCLING ENJOY ROCKBROS！
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9L LARGE CAPACITY – Dimension of 13.2 x 7.9 x 8.65(L x W x H), max 9L storage capacity with 2 inner mesh pocket. This bike rack bag has enough capacity to store all your cycling essentials like bike tire pumps, cable lock, jacket, etc. The elastic drawstring on the rack bag can also help tie a lot of items you need.
HIGH QUALITY & FULLY WATERPROOF – This bike rack bag adopts reinforced hard shell polyester coated with PU, featured as water resistant, durable, lightweight and easy to clean. Waterproof materials & water resistant double zipper can help keep your equipment dry. This bag also comes with a rain cover, so don’t be afraid to cycling in rainy day.
TOOL FREE INSTALLATION: This bike rear seat bag has 4 adjustable velcro straps, which can be attached to bicycle rear rack with no other tool in seconds and ensure its max stability and security from getting caught into its wheel. Adjustable straps make it suitable for most bicycle racks, such as mountain bike, road bike, e-bike, hybrid bike and gravel bike.
MULTIFUNCTIONAL BIKE BAG – This bike bag can used as a shoulder bag with the gifted shoulder strap or a hand bag with the hook on the bag. When off the road,The rack pannier bag is not only used for bicycle cycling but also can be used as a handbag, mountain climbing bag and shoulder bag for travel, camping, picnic, ski and more occasions.
REFLECTIVE STRIPS & TAILLIGHT HOOK – The reflective strips and logo on the rack bag increase the safety in night riding. The reflective strips and logo design increases night time visibility and the hanger on the strip can hold a taillight which can also enhance cycling safety at night or in low light situation.
Customers say
Customers find the bike rack bag well-made, roomy, and perfect for e-bikes, with one customer noting it can hold water, tools, phone, and wallet items. The bag fits well, looks good, and is durable. The zipper durability receives mixed feedback – while some customers find it good, others report it failing after 5 months of use.
13 reviews for ROCKBROS Bike Rack Bags – Hard Shell Bicycle Rear Rack Bag Large Pannier for Bicycle Rear Rack Bags Bike Rear Seat Bag Bike Trunk Bag Ebike Battery Bag Bike Saddle Bag for Rear Rack Bike Accessories
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Original price was: $45.99.$39.99Current price is: $39.99.
Alejandro –
Excellent Bike Trunk Bag â Durable, Spacious & Weather-Ready!
I recently purchased the ROCKBROS Hard Shell Bike Rack Bag, and I couldnât be happier with the performance. The hard shell exterior gives it a premium, rugged feel and excellent protection for my belongings, whether Iâm commuting or going on long weekend rides.What I love:⢠Sturdy and Sleek Design: The hard shell keeps the shape intact and offers solid protection against bumps. It looks modern and aerodynamic on the bike.⢠Spacious Interior: Easily holds tools, snacks, a lightweight jacket, and even a compact camera. Great for daily errands or longer trips.⢠Waterproof Cover Included: The included fluorescent rain cover is a huge plus. It not only keeps the bag dry but also adds visibility in rainy or low-light conditions.⢠Secure Fit: Attaches firmly to the rear rack without shifting around. The velcro straps are strong and easy to adjust.⢠Extra Features: The bungee cords on top are perfect for stashing an extra bottle or a small item for quick access.Minor Note: While the bag itself is water-resistant, the rain cover is essential for heavy rain â good thing it comes included!If youâre looking for a reliable, stylish, and functional rear rack bag for your bike or e-bike, the ROCKBROS trunk bag is a fantastic choice. Highly recommend for both daily riders and adventure cyclists!
Duluth Mom –
Nice bag
Perfect for my e-bike. Sturdy and maintains shape. Holds my lock and purse when commuting to work.
Honestly –
Great for ebike!
These things are just what I needed for my ebike. Waterproof, good zipper, good sizing (fits right on the backseat) and quality materials!
kevin owel –
Fits great on new luggage rack.
Great bag. Fits about anything.
No Name –
Overall, one of the best bags on the market
Nicely constructed bike bag with ample room, grab handle, reasonable rain cover with reflective material, a loop to fasten a clip-on reflector, & sturdy shoulder strap. Also, has two built-in mesh pockets with a wide opening for storage and easy access. Downside is Amazon delivered in a new, oversized box with a used and/or damaged bike bag, & frayed material. Bag was deliberately folded & crushed. Had to do a lengthy exchange process, since Amazon frequently misplace Prime packages while en route to delivery. Also, it wonât fit all bike racks as advertised. My rack is just the right bag length, but cannot strap down the back end without twisting the strap. The lengthy straps are positioned on the extreme ends of the bag, which make it difficult to securely fasten the back end (side furthest from the bike seat). Additionally, the high end of the bag sits level to the back of my bike seat and prevents combined use of a mini saddle bag. Ideal if the ROCKBROS bag placed in reverse direction, but then you have no place to tie down the end straps. I made it work, because overall this bag meets almost all my expectations. Love the wide opening, aerodynamics, and apparent durability.
Anon A. Moose –
Protection and convenience
This is a really nice bike bag. The hard sides make it keep its shape, yet the bag is very light. The velcro loops are well designed , the straps go through super easy, this bag comes on and off my bike in seconds. Zippers are beefy, product feels well made all around. Plenty of room for all my biking essentials like pump, tube, repair tools, water bottles and a rolled up raincoat.
Neil Tomlinson –
Great bike accessory.
Easy to fit, enough space for bike locks and tools and room for sandwiches!
Dennis –
It works well while it lasts
The bag works out well while it lasts. After about a month both zippers failed and now itâs useless. I will for another option.
Heidi –
Nice to have the hard shell so it looks good even with nothing inside. There are two inside pockets good for holding cell phones or keys. We packed a picnic. It perfectly held a rectangle Rubbermaid container with our 2 sandwiches, two containers of fruit, 2 water bottles and bags of candy with room to spare. Perfect size. The binge straps on top held a 3rd water bottle. Velcro straps are very strong to secure to rear bike rack. Made of quality material. Highly recommend!
Amazon Customer –
Nice trunk – load all my essentials for long rides, lots of room. Good zippers keep out dust and dirt great – haven’t had to use the rain cover yet but glad it comes with it for added protection!
Sylvain Beaumont –
Bon produit
Jacques –
Good quality
shotsmoky –
Itâs a little small but if youâre just biking around the city itâs a good bag.