I’ve been wanting to buy these type of double wall glasses for some time now. I actually bought this set intended as a gift but it did not arrive in time so I will keep it for myself. The Zwilling brand look to be very good quality and I am excited to use them for my hot and iced coffee. I haven’t yet used them, but hope they will hold up well, backed by the Zwilling warranty. [This review was collected as part of a promotion.]