Bottle cage

Composed of plastic, aluminum, stainless steel, titanium or carbon fiber, it is attached to the main frame of a bicycle, the handlebars, behind the saddle, or, in uncommon cases, the fork.

The most common location for a second frame-mounted bottle cage is on the front side of the seat tube.

Some mountain bikes have highly sloped top tubes that limit the size of bottles mounted inside the triangle.

Recumbent bicycles may have bottle cages mounted to the steering mechanism or behind the seat back.

Some manufacturers have released non-standard bottles and cages that only work with each other in order to offer specialized shapes (streamlined, for example)[3][4] or restrict consumers from purchasing brand-specific items.

The Trek Soho 3.0 comes with a stainless steel coffee mug designed to fit in the bottle cage mounted on the front side of the seat tube.