BV Bike Bag - Rear Bike Saddle Bag with Secure Velcro Mount & Shoulder Strap - Pump Holder, Bottle Pocket & Reflective Trim - Ideal for Work, Commute & Everyday Cycling - Bike Bags for Bicycles

This bag is perfect for my use, and this is the second one I've bought. (Unfortunately, I can't find the first one.) Anyway, it fits on my bike's luggage rack perfectly and holds everything I need it to carry. Mostly, I ride the bike to/from the gym, so it carries my heavy-duty bike lock cable plus 1-liter water bottle plus everything else I need for the gym, with lots of room to spare. It's also large enough that it will hold a few items when I want to ride it for quick trips to the grocery store instead of driving the car. By the way, another review mentioned "If you have a carrier rack that attaches to your seatpost," (like I do), "this bag will not fit well. The straps are simply not long enough to go all the way around the bottom of the rack". Well, it absolutely does, and it does so quite well. Both bottom straps and the strap in front that goes around the seat post are all plenty long and hold very well. (See the second picture.) I'd recommend the bag for normal use. Obviously, if you want to use it like a gym bag and carry changes of clothes, shoes, etc., it might not be big enough. But the size in the description pretty accurately describes its size, so just know what your buying and don't buy this one if it won't be big enough. Don't buy it then complain its too small. It's big enough for most user's I would think, and I would recommend it.

Bought this bag to use on the rear rack on our Aventon Level 2 ebike and it works great. It is not too large and not too small. Just the right size to carry a few tools, spare tube, a wind breaker, and a lunch. The rear pocket will hold a 0.5 liter bottle, just be sure to use the cord to hold it in place or else it will bounce out. The pump holder and side pockets work well to hold a patch kit and multi-tool. We have been using it for a while and it is starting to show some wear. The foam insulation helps it to hold its shape. The sides are insulated but the top is not.The side pockets are functional and can hold quite a few maps, allen tool set, wrench, etc. A great value and I would buy it again.

I bought this to use for a 15 mile bike trip with the kids on a field trip. It was handy to put a tire pump on the side and put snacks in. I got hot and put my sweatshirt in the bungee cord on top mid day. That was handy to have. The only thing I didn't like about it was the water bottle holder. You have to find a skinny water bottle to go in it or it squishes the bag up and it is hard to zip. They should have made the water bottle holder a little bigger or at least have a little stretch to it so you can fit a normal refillable water bottle in it. I had to find a skinny under armor bottle and use a carabiner clip to hook it on the bag so it didn't fall out. The small Pogo water bottles fit in it perfectly if you don't want an insulated water bottle. It was definitely nice to have this bag though. Some zip ties fit good in the side pockets to fix crashes on the go with a first aid kit.

At the time of this review it's winter. There was a lightning deal so I bought this sooner than I planned. The most I could do for now is attach it to my bike. I couldn't test riding with stuff in it as there's too much snow on the ground. So I will update when I'm able to do that.As far as looks this is great. I love how it fits on my bike rack. It was easy to attach with the velcro straps. It doesn't get in the way of my seat. The bag also doesn't flop over when standing on its own. I had no issues with the zippers. They seem to be very sturdy and working correctly. I have a bike pump attached to my bike already, but I tested it on the spot dedicated for that and works there too just fine. There's also a strap inside you can attach if you want to use as a handbag and use on your shoulder so you don't leave the bag on the bike if you have to go inside somewhere.There's also a spot for a water bottle that I can't test yet til I have one. But it's great to have a spot for that in case you can't mount one on your bike or need extra. The reflectors on the side work great also. There's plenty of room for storing snacks or bike tools, or even holding the bike locks that coil up in a circle. I can't wait for summer so I can test out how it holds up when riding with stuff in it. But so far I'm very happy and like I said I'll update when I'm able to actually ride my bike.

This bag is great. I have put it through some sort of hell already. I keep so many things in here and still have room for lunch. I have important things in this bag along with my pump. It fits an average water bottle and it is pretty elastic which was nice because if it wasn't that would be pretty useless. The 2 side pockets were very roomy also. I keep a first aid kit some food bars(2 because I bike trails) some cordage, batteries, lighting, and in the other side I put a poncho folded into a square in case of rain. I have put it through rain and snow this month but I have to add that I spray a waterproof coating on all of my bags. Either way this bag seems pretty solid when it comes to rain and snow. the main compartment has a pouch for the carry strap but I just left that out. If I need a carry strap I'll use cords. I have so much room in here I got some large pencil cases (soft) and separated everything from bike tubes, patches, etc things for repairs another case has things like tools I may need and the other cases I fit (3 more) are empty I just leave them there because old habits die hard. There is also a mesh pocket that is the same size as the whole main compartment which is really nice too. you can keep lighting for around your neck, hand warmers, some food, hygiene items, etc. In closing after many trial and errors this bag is shaped nicely, very roomy, strong, very spacious, and very thought out to maximize your space even outside. If you have been researching good bags and want something nice and strong without paying a billion dollars this is your bag.