16 oz. Critter Canteen, the thirst quencher for rabbits, ferrets, guinea pigs and chinchillas. Bottles provides fresh clean water anytime, all the time. Featuring a spring loaded ball bearing sipper tube to provide drip resistant operation. Free bottle hanger is packed inside the bottle. Bottle is 7.25" long and 2.5" diameter. 11" long with sipper tube attached. Can be used with Super Pet Water Bottle Holder.