ROCKBROS Bike Saddle Bag Small Seat Bag Bicycle Bag Under Seat Bike Accessories Storage Pouch Ultralight Cycling Wedge Pack for Road Mountain MTB Foldable Bike

Super small. Like fits an extra tube that is taken out of the box. If you need uber small, this is for you!

This Rock Bros under-seat bag is great! I have read some criticizing its size...IT'S SUPPOSED TO BE SMALL!! It is perfect for your go-to tire flat fix bag. It is almost tear-drop shaped so that it tucks up under the seat oh so well. In mine I hold: (1) 700x25 inner tube, 1 nozzle for CO2 cartridges (2 of those as well-each 16g,) 3 tire levers, and 3 allen wrenches for all the sized bolts, etc. that my Giant road bike might need. From the photos I supplied you can see how well it tucks under the seat, allowing for rear light underneath it that really lights up the reflective bottom of the bag as well. There is a little tab on the back that allows for another reflector to be hung, but I wasn't able to find one that looked and fitted well, so the round bag reflector already there does a good enough job for me. The affixing velcro tabs were a bit long (better that than too short...) so I used scissors and cut them down to size! This bag is meant to be for a job like I am giving it. I hope to never have to open it. It looks great and provides reflection as a bonus. I have a different bag up front for cell phone, keys, i.d., and power bars. It would be a disaster to have to reach around back while on the bike to retrieve such things! If you are looking for a minimalist bag to carry what I have described on your road bike, this is for you...

This bag is the perfect size for packing a spare tube, CO2, and tire wrenches. But, as one of the previous reviewers noted, the bag unzips itself during a ride. I've taped it shut, but that seems like a serious design flaw. As an update, ROCKBROS got in touch with me and offered a full refund, which was really nice. So, I'll upgrade my review by a star.

Works great with plenty of storage space

Not a huge bag to ride along with you but perfect for the keys to your vehicle that you drove in, a bit of money for a stop to buy a drink along your ride and room for an extra power or protein bar you may want to bring.

I was looking for a small undersaddle bag to hold a tire repair kit and some tools. I don't have my seat jacked up super high and I have a light at the base of the seat post that needs to be taken on and off for charging, so I needed a small bag that would fit high and tight! After looking at seemingly hundreds of them on Amazon, I took a gamble on this one and it has delivered exactly what I wanted. IT fits a WOTOW kit I also bought on Amazon, with some extra tools and two CO2 canisters. I replaced the zipper pull with a paracord setup but other than that this seems like a solid unit. I've had it on for about 2 months and have not noticed it at all, which is the point. I keep a small multitool wrench thing right in the front that I use every once and a while for adjustments and it is easy to access. I've had it covered in mud and water, cleans up nice. Might pick up a backup, it fits my needs that well.

The bag is the perfect size for a mountain bike tire repair kit (tire levers, puncture kit (if tubless), a few cannisters and room leftover. I love the size - BUT - the straps won't hold on the MTB ride. You have to use another velcro strap that's long enough or zip ties. So the extra work to keep it on the bike is worth it. Now, I have another Rockbros bag for my gravel bike that's larger and those straps haven't moved in two years. This is just a smaller bag, smaller straps, not enough grip. Its ok, just get a long zip tie and you'll be fine.

This is a very small bag but I knew that from the description. It is just what I need for a second Saddle Bag, though. It has enough room to store my electric tire pump and tire tools, freeing up space in my other bag which had gotten a bit too full. I've only rated this as 4 stars because the construction appears to be iffy; time will tell. That being said, I expect and hope that I will seldom need to open this bag so it should last a long time for me.

Nor like the images

Material muito bom, encaixe perfeito mais deixa a desejar no tamanho. No ideal seria com espaço para pelo menos uma câmara de ar e uma chave multiuso. Triste escolha de um ou outro.

It is made of good quality material (I haven't used it under the rain yet). It has reflective bands to improve visibility. The size is perfect to go under the bicycle's saddle. It actually doesn't interfere with the look of the bicycle at all, it compliments it very well. Please bear in mind that it is a small bag for under the saddle so space is limited to small items. I have put these items together and they fit. A credit card wallet, house keys, earbuds case and a small packet of tissue paper.

small but useful

It's smaller than I expected, but decent quality, I actually wanted it to hold my puncture repair kit so I have everything on the bike in case of emergency running a tubeless set up. I'm not convinced that it's entirely secure but yet to test