The double-walled glasses by Bodum come in stable packaging and wrapped in air foil therefore, so when transporting nothing broken geht.Die glasses are worked very shapely, however, should not be expected that all lenses are equal - they are made by hand, which can make a difference in height of about 1-3mm. Although Bodum indicates that the glasses are dishwasher safe, but I clean the glasses rather by hand to avoid tarnishing.
Entirely subjective, I find the tea tastes much better now ;-)