I use this one for triathlon and gravel. right size for gels + dynaplug and co2, aero shape, thighs don’t brush it/chafe like my last one https://www.amazon.com/XLAB-Stealth-Pocket-Frame-Pack/dp/B0189O08FK/ref=sr_1_7?crid=KIZARHJODJ6D&keywords=xlab+top+tube+bag&qid=1696261976&sprefix=xlabs+top+tube%2Caps%2C133&sr=8-7
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