More than practical when your baby is thickened milk with the bottle ... that goes with it has changed our lives! (The bottle great homogenized). It cleans well even if at first sight it has a unique look. Also available in rubber (perfect for little babies and Prema for the debut) but a pity they do not sell here. It has been passed silicone for two weeks but it is really great! Oh and yes there is only speed, but with the super-draft is baby who decides himself flow (it goes a very cool I died of hunger and without it we (parents) have nothing to do!).