Those who would rather not think about anything at all may wish to consider the alternative of taking a thing only once. At first sight, the plastic and assembly seem of low quality, but after using them for a while, you come to accept this as the case. offers benefits: Does not lose effectiveness over time (as we all know from commercials). does not necessitate the upkeep of tens of thousands of filters or the purchase of costly replacement parts Easy to disinfect Ergonomic design makes switching between attachments and surfaces simple and straightforward. Distinct drawbacks: It may pivot like a ball while changing course. Quite a bit of room is required