Silicone Travel Bottles Versus Plastic Travel Bottles. Silicone Travel Bottles withstanding plastic bottles consider a few more notes in particular. Silicone bottles have more elasticity as well more solidity as a structural material while boasting benefits such as: easy to squeeze and wide mouth for filling. Whereas plastic bottles are a bit lighter, cheaper, but equally do not offer a high level of safety and do generally pay some sort of downside to people and the environment. However, simply due to increase in global awareness concerning the protection of the ecosystems silicone travel bottles are instant favorites to the mobile travelers who need such reliable and diverse storage devices.