A Cannondale storage bag that fits on the top tube and stem.
Kind of geeky but in the last 18 months I've lost 2 pair of Rx sunglasses that came out of my jersey pocket after changing them out during twilight rides. I'm not too old to learn (finally).
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“Life is not one damned thing after another. Life is one damned thing over and over.”
Edna St. Vincent Millay