Shinkoukinzoku Mug, Silver, 460ml, Lightweight, Pure Copper, Heat Conductive, Outdoor, Retro, S-586SNL, Available in 4 Sizes

Copper boasts excellent thermal conductivity among metals. When you pour a chilled drink into the cup, it instantly becomes as cold as the drink, quenching your thirst and cooling your body. The refreshing feeling you get from your lips is irresistible. The cooling effect also lasts, so your drink will stay cold and delicious even after 15 minutes. The water droplets that form on the surface accentuate the refreshing feeling.