ROCKBROSBike Saddle Bag Bicycle Seat Bag 3D Shell Saddle Bag Under Seat Cycling Seat Pack for Mountain Road Bike Bicycle Blue

Just loaded this up and installed it today. Size is pretty much as advertised. I was able to get 3 allen wrenches, CO2 inflater with 3 CO2 cannisters, spare 700c tire tube with small plastic tire spoons, small wrench with multi-bit set and tire patch kit inside and it's pretty much stuffed. I read where some reviewers said they used this bag to hold their lunch. It would have to be a pretty small lunch to do that.The bag appears to be made of quality material and the reflective piping around the perimeter is really nice. The zipper looks to be well made and closes very tightly ( highly water resistant). The bag attached securely to the seat frame and seat post and is secure with no wobbles. There was still room on the seat post for my tail light after bag install.All in all this seat bag is just what I needed and looks great. I'll update this review if the durability turns out to be unacceptable.

I purchased a previous version of this ROCKBROS seat bag. After installing it I couldn't get it snug enough to prevent it flopping around. ROCKBROS graciously let me return it.This redesigned bag is genius. Easy to install. Snug to the seat and post. Roomy and well made.I recommend this bag to anyone and I will recommend and buy from ROCKBROS in the future.Thank you ROCKBROS for your customer service.

So far, so good. Can't really beat it with similar price product.Pros: No swaying, waterproof 9/10, plenty of spaceSmall amount of water gets through bag and zipper closure- not that big of a deal, just put some wax or waterproofing spray on. I am able to fit multitool, spare tube, other tools, and granola bar in it.Cons: concerned about silicone attachment.Attaches bottom bag to seat post. Ships with extra band in case one breaks. Eventually, it will probably oxidize and snap. Not too concerned - if it breaks, bag can hang on with velcro straps. Would be easy to make own band.UPDATE: June, 2023 - Still going strong!- I replaced the band a couple months ago. Installed the extra one. Amazed I still got +2 years out of the first one. Not worried if this one breaks, can use various rubber bands, velcro, etc.- Zipper going strong. I clean the zipper whenever it feels gritty/dry (couple times a year. Put on some T-9 Boeshield or silicon spray and call it good. Usually the zipper breaks first, so be sure to maintain it!- Also, I applied waterproofing spray and reapply once or twice a year. Helps a ton, as long as it isn't downpouring, the inside stays dry. Velcro straps still really sticky. I maybe take the bag off once a month.Again, great bag for the price

Great design with large opening and extra storage pockets. Lightweight and sturdy.

Tough material with lots of room for storage.

Needed a bag on my road bike to carry essentials for tire repair. I also placed some energy bars and gels in the bag for longer rides. Still plenty of space left for more. The velcro straps are super strong and grip tightly and the strap on the bag for a tail light is in the perfect spot. Not too big and bulky and will fit perfectly under any seat, even narrow road bike saddles. Wonderful product all around. Highly recommend.

I like the sturdiness of this product. It fits my trek bike perfectly. Installation was a breeze. I can fit my Samsung s20 phone with case which is what I needed it for. I particularly like the rubber bottom. This product is TOP NOTCH!

Enough to keep the car keys, tools and spares

Buena calidad , amplia y resistente

Good

The product is nicely designed and looks strong and durable. The fittings are good underneath the saddle and can be easily detached. There is plenty space for a phone and wallet, as well as other bits for a bike.

Sturdy. Fits phone, wallet, keys ok. Great build quality.

I love it