Joined: Aug 2009
Posts: 6,746
Likes: 5,366
From: Minneapolis
Bikes: 2022 Salsa Beargrease Carbon Deore 11, 2020 Salsa Warbird GRX 600, 2020 Canyon Ultimate CF SLX disc 9.0 Di2, 2020 Catrike Eola, 2016 Masi cxgr, 2011, Felt F3 Ltd, 2010 Trek 2.1, 2009 KHS Flite 220
Maybe there are others on this forum who have solved this problem for themselves, and they would probably be best able to help you. But if there aren't, the rest of us might be able to help better if we had an idea about the size/weight of the bottle. Have you got a picture?
One idea is that it perhaps could go in a backpack?