We recommend storing glasses upside-down since this will prevent dust and other debris from collecting in the glass. However, there are also cons of storing glasses upside-down.
'There is some debate about whether glasses should be stored upright or upside down. Storing them upright can help prevent dust from accumulating inside the glass, while storing them upside down can protect the rims from potential damage. Choose the method that works best for your specific glassware and storage space', suggests Ilia Mundut, founder & CEO of HeftyBerry .