Topeak Backloader Top Tube Bike Bag - Waterproof Cycling Storage for Phone, Keys & Essentials - Perfect for Road, Mountain & Commuter Bikes

Great for people that bicycle don't have mounting holes for a real thing. My seat post is not round but oval "aero" that's why this was only option to ad storage to my road bikeBought one of these to use on a three day bikepacking trip, and were so impressed that we ended up buying another one for my partners bike as well. Really liked how easy it was to mount, the removeable inner bag and the fact that we didn't really notice it when it was on (Despite them being fully packed). The only issue I had was clearance, as I have a smaller ladies bike I didn't have the recommended clearance so had to pack it carefully to make sure it didn't end up rubbing on the tire.So, I ordered 10L and received 6L, but the item I received was a good new condition topeak 6L bag and looks sturdy. The seller allowed a return and full refund, I sent it back without trying it so I can't speak to the items quality but the seller is good, besides listing it incorrectly.Ich habe für mein Gravelbike eine Alternative zum Anbau von einem Gepäckträger gesucht.Ich war skeptisch ob das System, was natürlich instabil wirkt, bei der Fahrt schwingt. Fehlanzeige, ich habe es wie auf dem Foto zu sehen mit ca. 3-4kg befüllt und nicht gemerkt, auch bei hohen Geschwindigkeiten. Die Befestigung ist ist clever und sehr wertig. Ich kann es sehr empfehlen.I bought this backloader for a 4 day cycling trip & it didn't disappoint. The outer bag is well constructed of high quality weatherproof material. The inner bag provides the space for clothing & gear. It too is high quality material. This bag includes an air valve to release excess air within it to compress the volume of clothes packed in it. Once compressed the shape of this bag easily fits into the outer bag.The back loader is fitted to the seat post using a stiff velcro strap, which ensures a secure fit. Two leather straps over each seat rail provide further attachment to the backloader preventing lateral movement of the bag whilst riding. I hardly felt any swinging of the bag even when peddling out of the saddle.The bag is closed by rolling over the rim & securing with straps at each side which can then be tightened. The strap ends can be tucked away to prevent flapping when cycling.I would advise users to attach the outer bag to their bicycle before inserting the inner bag. It's much easier to attach the straps through the seat rails this way. Once the inner bag is inserted & the bag closed, the straps can then be pulled tight.I would recommend this backloader for shorter cycling tours, 5 days or less. The reason being that it's difficult to pack shoes or bulky items in the bag.The most versatile saddle bag I've had.You can pack enough in this to cover a few days away and still have room for food and any other bits you might need, or sinch it down and just pack your waterproof and tool kit.It is unnoticeable on the back if the bike even if you stand up on the pedals and give it the beans - not that I'm into racing to get anywhere, and prefer to cycle at a more leisurely pace these days.It was going to be used for a cycle trip through France but covid put a stop to that - however, I've used it locally on all day rides enough to know this is a great bag.Easy to attach / detach, comes with separate waterproof inner bag, though the outer shell offers good protection on its own.I've had dozens of saddle bags over the years and this is without doubt my favourite, as it offers me a medium, large and very large bag all in one.Replaced a heavy carradice saddlebag with this and it's great. Simple, works, easy to move between bikes, *relatively* cheap given how much you can spend on one of these bags. Have had it over half full and didn't even notice it on the bike, no swaying. One thing I was looking for was light loop and the ability to make it small - both of which work on this. Came with a dry bag too, though I haven't used that yet. 10l is not big enough for a big tour but for day and single overnights it's big perfect. Big bags go up to 13-15l and this is noticeably smaller than that. Half full is two tubes, tool kit, leg warmers, thin puffa, hardshell rain jacket, spare medium gloves and a cap. Only to reason to avoid is if you want matching colours and a complete 'suite' or if you are a brand snob, otherwise buy it. In depth review on road.cc.I am really happy with the product - I have trialed it out on a 2-day ride and it held everything I needed (light down jacket, tool kit, flip-flops, change of clothes, minimal wash kit). It's slightly fiddly to take on and off, but I think it will be slicker with practice. The only useful addition would be a carrying strap as I would ideally lift the entire thing off the bike to take into accommodation/ walking around over lunch etc.