Never break a coffee mug again when you choose to take your java from these shatterproof steel coffee mugs. This 3.875″ x 4.5″ mug is crafted from 304 double-wall insulated stainless steel and holds a big 12 ounces. Heavy design is a pleasure to hold and drink. Ear-shaped handle. Silver tone. Add your school, sports team, organizational or company logo or message through our signature silkscreen method. Hand wash only. Do not microwave.