What size is the gorilla cage and can it carry a 1 litre size bottle?

Not sure but it can easily carry one it's much much bigger than that 3 litres ish?

Edit
25 cm long
Diameter about 15-18 cm ish using velcro strap cage thing ( very rough measure that).
Strap ( 3 of ) is 50 cm long but you need to velcro it to itself so 45 ish useable ?

Weight is more of an issue than size tbh