From Tiki Farm:

"Our popular Bamboo Mug has returned in an iron brown dual tone with hints of green flecks and overtones. Standing 7.5 inches tall and holding approximately 12 oz., this mug stands proudly on its own, but prefers the company of others! That might be you!

Limited supply.

Please note: our dual-tone glazes have variance and no two mugs ever turn out the same.

Height: 7.5 inches Capacity: 12 oz. Material: Ceramic Stoneware"

This same design was issued in multiple glazes and also branded for different tiki locations.