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The ROCKBROS Top Tube Bike Bag is a sleek, lightweight (90g) cycling accessory designed to securely hold your phone, wallet, and essentials in a spacious 1-liter compartment. Featuring quick-install adjustable straps, a smooth one-hand zipper, reflective safety accents, and durable ripstop polyester, it fits most bike frames and enhances your ride with convenience and style.












| ASIN | B07YWXS4RL |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #4,682 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #14 in Bike Handlebar Bags |
| Brand | ROCKBROS |
| Brand Name | ROCKBROS |
| Capacity | 1 Liters |
| Closure Type | Zipper |
| Color | STYLE 1 |
| Compatible with Vehicle Type | Bicycle |
| Customer Reviews | 4.6 out of 5 stars 2,855 Reviews |
| Handle Type | strap |
| Item Dimensions L x W x H | 8.66"L x 2.16"W x 3.93"H |
| Item Type Name | bike bag |
| Item Weight | 98 Grams |
| Manufacturer | ROCKBROS |
| Manufacturer Part Number | 039BK |
| Material | Polyester |
| Material Type | Polyester |
| Model Number | 039BK |
| Mounting Type | Handlebar Mount |
| Number of Compartments | 1 |
| Pattern | top tube bike bag |
| Pocket Description | Cargo Pocket |
| Product Dimensions | 8.66"L x 2.16"W x 3.93"H |
| Shell Type | Soft |
| Size | one-size |
| Strap Type | Adjustable, Stretchable |
| Style Name | Style 1 |
| Unit Count | 1 Count |
| Vehicle Service Type | Bicycle |
P**Z
Seems perfect!
I bought this top tube bag to replace a bag that was too small for my new phone. I am 5'3" and my bike is a 50" frame, so I don't have a lot of extra space to work with. I was concerned at first that this bag would be too big, and in my way. The slim design alleviates that concern because I can still straddle my bike with enough room for my legs. I don't notice it on my bike at all, and it will fit my phone, wallet, and other small personal items that I don't want to put in my jersey pockets. I like the elastic attachments...fits my bike great and looks clean. I've only had it a week, so I don't know how the elastic will hold up, but it's a plus over the velcro. Hoping I will get substantial use from it.
B**N
Perfect Bike Accessory – Sleek, Functional, and Durable!
I recently purchased the ROCKBROS top tube bike bag and couldn’t be happier with the product. It fits securely on my bike’s frame with zero wobble, even during longer rides or bumpier terrain. The material feels high-quality and weather-resistant, so I don’t worry about my phone or essentials getting wet. The best feature for me is the convenient phone compartment. It’s the perfect size to hold my iPhone and keys, without getting in the way of pedaling. For under $25, this is an incredible value. If you’re a casual rider or a more serious cyclist, this bag is a smart upgrade. Highly recommended!
G**R
Good bag, but the zipper…
I like this bag, so much I have purchased 4. My current iPhone is the 11 ProMax, and it fits (a little tight, but that’s ok) plus room for a a bar, ID/cash, keys and, currently, a mask. It’s been great, comes with LONG straps. Two complaints:1) very minor, but the knot on the side is consistently tied at the rear of the bag, and hits my right knee with each stroke. That picture I attached is an easy fix, but would be unnecessary if installed in the better (I think) position originally; and 2) the zipper is a bit funky. It stays waterproof, for the most part, and when new operates well. However, over time, especially if it sits idle, corrosion sets in and it becomes hard to operate, to the point that lube didn’t help, and on one of the bags the pull broke. I bought another bag but think this is a design flaw. The problem is accelerated because the bag sits in the “sweat zone” on the bike. (If you don’t sweat while riding, no problem.) It would be good to know the best lube to use (which oil works best without melting the plastic zipper, is silicone spray ok, should I use wax?) Also, is there a recommendation to wash it? How often? With what? I can experiment, but it would be most BROS-like I think if the company (or distributor) shared guidance and attention to detail.
A**G
As advertised
The ROCKBROS Top Tube Bike Bag lives up to its promises and has proven to be a great addition to my cycling gear. One of the standout features is its perfect fit for larger phones, like the iPhone 15 Pro Max, making it a practical solution for cyclists who want to keep their phone easily accessible while riding. The bag is lightweight and portable, which doesn’t add unnecessary bulk or weight to the bike. Its new mounting system is secure, ensuring the bag stays in place even on bumpy rides. The design is sleek, and the material appears durable, holding up well against different weather conditions. Overall, this top tube bag is an excellent, straightforward solution for cyclists needing a reliable, compact storage option for their phone and other small essentials.
A**K
Hey man, nice sack.
Great bag and secured very well with the bungie strap system. I like the slimmer size which is just for my wallet, keys, and snacks while riding. The charge cable port is a great addition as well. Overall, the quality is very nice for the price.
O**O
Decent sized boom bag for recumbent trikes
Decent sized boom bag for recumbent trikes. The straps are just long enough to go around a squared boom, with ample length of strap for the front post. Secure seal on the zipper with a tuck underneath the flap when fully zipped. Easily used even with cycling gloves. Two inside mesh pockets to separate cards, tools, etc. Main compartment is large enough to hold a face mask for chilly rides, a pair of gloves, power bars, energy drink packets, electrolyte tablets, and more. One side has laced elastic cording that can hold a variety of items close at hand and away from the legs when pedaling. I lace a power cord from the lower Rock Bros. bag to a phone mount above this orange bag. Elastic cording keeps the power cable close to the back. Even have a Brook Pocket Catcher I attach to the side of the bag. Would recommend to the manufacturer to supply longer straps on front and rear areas of the bag, and perhaps offer a 4 inch longer bag of the same height and angle. Also have the elastic cording to be on both sides of this bag. Do treat the bag as have noticed fading of the material on the zipper side. Note: There is a Rock Bros Frame Bag In have underneath to boom to hold a large power pack that recharges the phone when out and about. Also carry extra tools, a cloth rag, and gloves when working on the chain when necessary. (ASIN B07QM4X22Z) I recommend both bags for use on recumbent trikes.
B**.
Frame bag is well designed
The frame storage bag works as described. Fit securely on my mountain bike and does not interfere with peddling. Quality seems good. I keep tools in a separate seat bag. The frame bag holds my phone, sunglasses and a protein bar. Not a lot of space but adequate while remaining unobtrusive.
B**G
Perfect for me but check to see if big enough for your phone
This small top tube bag was perfect for me. That said, I have an iphone SE which is not a large phone. Bag held my phone and wallet and keys. Zipper worked fine. Straps held bag on securely. Bag nice and sturdy. So convenient having that bag right where it can be accessed so easily. Before ordering make sure your phone will fit. If the manufacturer makes a slightly larger bag I'm sure that would be good quality too.
J**Z
Excelente
Muy funcional
S**A
Fit for one mobile and sleek wallet
匿**名
小物収納に便利!
容量はそれほど大きくありませんが、スリムで脚が当たることもなく、チェーンロック、補給食、財布などの小物を収納するのに重宝しています。ゴムのドローコードがついていて、脱いだ薄手のウインドブレーカーなどを括りつけることもでき便利です。
M**I
Amazing quality and aero fit
Good quality and perfect aero fit.
B**Y
Fit for purpose
Rock solid quality item.
Trustpilot
1 month ago
1 month ago