Originally Posted by
roskobosko
Why not just buy a decent quality $5 bottle cage? Have you heard of 50 Strong?
https://www.amazon.com/50-Strong-Bic.../dp/B07B1NFN57 I actually use these and they work just like others, not sure how long they'll last yet, but I think the other two I mention below will hold the bottle more securely though I never lost a bottle yet with these cages.
There's also the Lezyne Flow that cost around $14 and are built very well and can hold any bottle securely, but weigh around 48 grams.
And there's the Tacx Deva which cost around $20 and only weighs 32 grams.
There are hundreds of cages that don't cost anywhere near $50. Also putting something large like a water bottle in your jersey pocket and you crash and land on your back you could seriously damage your back; mounted to the side of your body you could seriously damage a kidney. Never put anything hard against your body.