Top tube bags, also called bento boxes, are small storage bags that are attached to, you guessed it, the top tube of your triathlon bike. They’re handy for a variety of uses. In a race, your top tube ...

Of the many options to carry extras on your bike, a top tube bag is one of the smallest but most useful. Perched on top of your top tube, usually at its front end, these bags are easy to access, ...