For years I've been running just a standard bottle BTA on my aerobars after switching away from the old splash and crash Profile Design. My original plan was to run this set-up with some cheap bottle I don't mind losing then just ditching it at aid station in the trash zone during IMMT. However someone said that the bottle at IM don't secure well in the cage? If this is the case I was considering an A2 for racing and continuing to train with just standard bottles on the cage. Any input is appreciated.

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I still lapped everyone on the couch!