TopeakMTX TrunkBag - Rear Bicycle Bag - Spacious Storage and Easy Mounting

OK,I have been using this bag daily on my work commute for about a month now, and I absolutely love it!I respect something that is well engineered and this bag certainly is that!That said, this bag is made to be used with Topeak MTX racks. If you don't have one of these, either buy one, or look for a different bag.While I gave this bag 5 stars, it is not perfect, but certainly worthy of 5-stars.First the good points:-Perfect size for what I wanted. I love the fact that I can have a clean looking bag on the rack that has fairly large panniers ready to fold out when needed. The main bag is pretty good sized. The bag comes with a velcro divider, that can be placed anywhere, but I don't use it as I prefer the single large space. That space will accommodate a carton of 12 eggs (actually 2 cartons). It will also hold a full sized iPad, although that has to go in at an angle, so it limits what else can be carried with it. It can also hold a medium size U-lock.-The easy click mounting on the rack is fabulous! Very easy to take on and off and very secure when mounted. The panniers include shock cords to loop around the bottom of your rack, so they are also very sturdy when utilized. The quick release is a very simple design, but works great. It also appears that if the spring ever broke, it would be replaceable by just removing one screw. I doubt that will be necessary, but I always like having repair options.- The panniers are well designed and hold enough for my needs. One pannier is able to accommodate a medium weight jacket or a pair of pants and shirt with ease. One pannier will also easily hold a pair of size twelve shoes. I have stuffed a fair amount of groceries in there, and it has held up fine so far, but I will revise this review in 6 months or so to see if any problems arise.OK, so what could be better?Well, I guess the zippers could be beefier. A few reviews knocked the bag for the zippers. Honestly, they seem pretty good to me. They are all double-zippers, which is nice.They open and close easily, but I suppose heavier duty ones would be better. Also, the handle on top does make the top zipper support all the weight of the bag when carrying that way. I guess this might stress the zipper over time, but if you use a bit of caution, I don't think it will be an issue.One last thing I wanted to point out is that you can store a little bit off stuff in the side pockets even with the panniers folded up. I was storing my spare tube in there and it fit fine, but you certainly don't have a lot of extra room as the panniers take up most of it.All in all, a very clever design that I think is worthy of 5 stars!I hope you found the review helpful and feel free to ask any questions. Cheers!

First off: Despite the photos, THIS IS NOT the MTX 2.0 bag. I thought it was, which is why I bought it. Although the descriptions don't mention anything about it being the original style, I'm kind of glad that I got this one instead. From what I was reading & seeing in videos on YouTube, this version has 2 zippers on either sides of the pockets, whereas the MTX 2.0 only has the one, so you have to zip and unzip it the entire way. I know it's kind of pedantic, but to me I actually like that small quality-of-life feature. Outside of that and the MTX type, they are practically identical, so I am not going to take off any stars.The bag itself is excellent quality!! Despite it not being waterproof, the main compartment seems like it has a waterproof lining to it. Do not take that as fact though because I haven't tested that aspect of it. Also, the adjustable divider inside is super nice to have, and the pockets on top, the expandable top, and the bungie laces on top are absolutely amazing.The panniers seem to hold a very large amount, and I could even get my laptop and several books inside, so this will be perfect for bike-packing. They also fold up nice and clean into the side pockets, and there's even room left over if you wanted to put some smaller things inside like a wallet, keys, small tools, handcuffs, mice, etc.It also even has a nice shoulder strap so you can carry the bag with you when you leave the bike. (May be a little more cumbersome with the panniers out)My main concern (I haven't used it on any rides yet) is the lack of any kind of Velcro (or similar) fastener for it attach to the sides of the rack. It does, however, have a bungie cord at the bottom of the panniers with a looped end which you can use to fasten to the bottom of the rack where it attaches to the frame, but on my Salsa Journeyer it's way too long and I can't attach it to anything, so I'm going to have to find a solution for this.Gorgeous bag, very well made, and HIGHLY recommended!

Great bag, did not come with the rain cover which sucks but it is what it is. Zippers are very well made. Fabric is thick and the track system this bag uses to secure the bag to the rack is very well built. Easy to put on and take off.I would highly suggest you spend the extra 20 to get this track lock system if you plan on removing the bag from rack even if it's every so often. This bag will not come loose not matter how you ride trail or road.