Initially only 1 mug of the "box of 6" was delivered.  Was very disappointed as it was a Christmas gift.  Eventually after the holiday a box of six did arrive.  While I was happy to eventually give the gift (the receiver was very understanding, as he had been searching for the larger mugs like these for some time) I was a bit surprised at the response from Wayfair, "Well, it appears they've gotten lost". .. and that seemed to be the end of it.