It is very well kept clean. The food served does not leave colored marks on the glass. The glass bottle is characterized by a long service life. Meets the highest quality requirements. In the standard version, it contains a slow-flow silicone teat. See also the other products of the Canpol babies brand, which are in the categories Bottles, cups, Feeding supplies and Mother and baby. If you are not sure about the choice of this product, be inspired in the category Bottles with pacifiers.