From D.S. Edwards:

"This tiki mug stands 5.5 inches tall and holds 18 ounces of beverage! The fourth in a series of four, this limited edition hourglass-shaped mug can be a decoration, a holder of drinks, (rum-heavy or otherwise), or can prop up a table with particularly crooked legs. Manufactured by Tiki Farm, designed by me, D.S. Edwards!"