I initially purchased this to give myself some flexibility for an extra bottle on long rides this summer, which it works great. But after a trip to the beach and an emergency visit to the liquor and grocery store, you can almost mount anything. 1/2 gal of milk - no problem. 1/5 of tequila - Muy bueno. Pint of Ben and Jerry's - Coffee Coffee Buzz Buzz
You won't find a better mount setup than this. With the BOA system , it will securely hold almost anything you can fit in it. I'm very happy with my purchase
I am one of those people that commute to work and rides their bicycle regardless of weather. I love attaching my Stanley thermos to the bicycle and drinking my coffee at red-lights and when I get to my destination. This has saved my cold morning commutes. I do not have to worry about losing my thermos or have to wait until I get to my destination in order to have hot coffee.
The base and uni connector with a regular bottle need more space between the downtube and top tube than just a normal cage and bottle.
This is my product of choice for my commuter bike. I can hold a regular Camelbak bottle, a Latte, or bring home a bottle of wine for dinner. This is the Rolls Royce class of mounting systems. A must have for cycling enthusiasts.