Each cover will have 12 Granny Squares stitched together on each side with a boarder of your choosing, this colour is also used for the neck (however you can choose to have strips instead). This will fit and standard bottle, they generally seem to be the same size.
The bottle can be filled with the cover on and it has a cute button closure at the bottom - these are mixy matchy buttons in your colour choice (depending on availability).
See here for more Hottie listings
for more ideas for custom hotties find inspiration here on my flickr board
for many more granny crochet items browse my shop
thanks for stopping by, drop me a line if you have any questions (or just to say hi)