• Hard to video no sway, but if I knock it, if will vibrate a little bit on its internal frame, not sway. It's attached to a bit of metal which clamps to the saddle rails so it's more like a Carradice Bagman than say an Apidura which is strapped to the bike with velcro. As long as the rack holds firm on the saddle, it can't sway.

    I don't need 15 l. I need about 12, but they do 9 or 15.

    I used an 11 litre one in 2016 which was just a bit too small. I had to ditch some spares at the last minute (which I didn't end up needing, but might have done). This will enable me to rationalise another couple of small bags which I have had dotted round my frame. And it's not a bad idea to have some spare capacity for when I need to carry extra food etc - as long as I avoid the temptation to fill the space...

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