Competition? It is known that it is the consumer who benefits best. The products in our offer devour each other in terms of functionality and shape. Is the ARK hollow tube better than the entire range of chewy tubes? The latter have more sizes, so we can address them to different patients, they are also textured and are thicker or thinner. However, the handle is also important, and in non-office conditions, during everyday chewing, it may be more useful and comfortable.