The Mam baby bottles are classic. I already had the gears 1 and 2 (1 for water or liquids with the needs of a slow speed, 2 for formula milk, average speed). My starting small grains and vegetables in liquid, the speed X is perfect. The hole is big enough to spend quite thick liquids. Be careful, however, we must keep a certain fluidity, puree mixed with milk does not happen if it is too thick or too homogeneous.