Most options are crafted from 100% solid copper, and a few listings note a nickel-lined interior as an alternative.
Listings commonly show either a smooth, hand-polished finish or a classic hammered texture.
Many mugs feature a brass handle, and some options list an authentic copper handle instead.
Mule mugs are typically around 3.75 inches high by 3.5 inches wide, while the smaller shot-style mugs measure about 2.0 inches by 2.0 inches.
They are described for cold beverages, and the product details explicitly warn against using them with acidic drinks like citrus juices, wine, or vinegar.
Most are presented as solid copper construction, and at least one listing notes a nickel-lined interior.
Customer feedback in the summaries highlights that these mugs keep drinks ice cold and note effective insulation and a noticeable chill at the lips.