A good hydrator, does not rub, does not smell, it is enough to rinse a couple of times with cold water, terribly obsessive can try to wash it from the inside, but risk damage. The nipple should be pierced in two places of recess, on the sides of the nipple, pull the nipple, and you can drink water, only water! On the hydrator warning that other food can damage it!
Everything is OK. Fast shipping. Delivery completely matches description. Thank you very much. Excellent seller. RECOMMENDED