Because the small one is too small and the big one too big to take with you.
Great size to take with you
Very satisfied with the product.
Well, it almost comes close to the Classic - quite sour
Coca-Cola Zero is very good and doesn't taste as sweet as Coca-Cola
Good, great price, packaging fits
Too expensive for what it is
Not a fan, but it's for guests
Instead of 900, 1l would be better
Much appreciated by those looking for sugar-free Coca-Cola