Cheers Glass (left)
When first presented, the glass is one. The "half-glasses" slide apart as the bases have slots the width of a stem. Each "half glass" has half-stems 1/8" higher than the other to make up for the difference in height when joined.

Bottoms-up Glass (right)
"Bottoms Up" functions as a 5 oz. & 8 oz. glass by flipping it upside-down. The curvature around the perimeter allows for a firm comfortable grip. The thick solid makeup gives it weight and durability. It has a classic yet functional appeal, just like the Bombay Sapphire bottle.