• Still on for it. I have to bend my cage already so that my bottles don't bounce out, so a bit more won't hurt. Or, as you say, carry it elsewhere. I normally have a bag of some kind on me.

  • They actually appear to be the same size as the original aluminium BRP bottles I had made a few years ago, as they sent a free sample of one of those again too and it also rattles.
    I guess it must have been that I also had 'squeezed' metal cages back then, so didn't notice the size... But now I'm a big boy with fancy Tune carbon cages that are a set size, I've noticed the smaller size of the flask/bottle. It's a shame they didn't use a standard cycling bidon diameter, but I guess cyclists weren't their main target market?