The shape and size of the Haven SEICENTO bottle is designed to fit comfortably into the frames of full-suspension bikes, e-bikes or other bikes with a smaller internal frame space. Thanks to the shape and soft material, the bottle fits well in the hand and can be squeezed slightly so that you can drink quickly and comfortably. The material used is BPA-free polypropylene. The mouthpiece is made of safe silicone which is easy to clean and therefore limits the growth of bacteria. The mouthpiece is large in diameter and completely protected from leaks. Inside the mouthpiece you will find a cross membrane against unwanted leakage of liquid from the bottle if the mouthpiece is not closed. (During a race or in extreme situations, you don't have time to close the mouthpiece so the drink inside will not spill onto your bike frame and dirty it).