These clear plastic water bottles come in a range of sizes to suit all small animals from a Hamster to a Rabbit. They feature a stainless steel twin ball point sleeve and a gnaw resistant angled cap.
As a guide here are the water bottle sizes:
140ml - Suitable for Hamsters, Mice and Rats.
300ml - Suitable for Guinea Pigs
600ml - Suitable for Guinea Pigs and Rabbits
1.1l - Suitable for Large Rabbits and Multiple Pet Cages.