Diner Days, Every Day. Ahh, the comfort of the diner mug. Thick walled and narrow in the middle, it’s the extra large coffee mug that loves being cradled at breakfast, with an open heart for your woes at the end of a long day. Now, enjoy those diner memories, in this modern take on the original Victor Mug. Familiar, yet modern. Your 15.5 ounce glass mugs with handles are the same shape as the cute coffee mugs we know so well, but instead of a ceramic thermal coffee mug, this glass coffee mug set lets you view your brew for a relaxing and enjoyable experience.