Offer great drinks as well as a great conversation piece with this novel 20 oz. muscle mug. The mug features a thick-glass construction to retain temperatures longer, with a unique muscled-arm design forming the mug"s handle. This exquisite glassware makes drinking really fun. Made by Libbey, this fine product is sold in sets of 6 under item code lg-12021519. Top diameter 3", bottom diameter 3.375"