Comes with a wide mouth so you can easily refill it from a bulk bottle without using a funnel or spilling it. These bottles will not split or become brittle and inflexible. It is made from a flexible and durable plastic which is designed to be squeezed repetitively to dispense liquids. 26cm x 7cm and hold 720ml's of liquid. These are coloured white, yellow and red, and they are slightly transparent so you can see how much liquid is in it.