I preface that I have only used these twice so far. So I like the shape of the mug BUT they absolutely do NOT hold the 16oz they state is their capacity which was a big disappointment and the main reason I bought these. Filled to the BRIM they barely hold 13 oz, and it’s not practical to fill the cup to the brim, so it’s really a 12 oz capacity.  I also don’t feel these mugs are quite as well insulated as other double walled glasses I have used.  While the outside is not scalding, I can still feel warmth holding the mug on the outside when it is filled with hot coffee or tea.  I have not tried cold items yet to see if it prevents condensation.  All in all I like that it is wide and a bit shorter than most double walled glasses but otherwise not what I wanted