You know about stemless wine glasses? This is Otter's version of the stemless martini glass, what he calls mini-(mar)tini glasses.
These really are all fun - no two are alike in height or design, but each features a shot-glass-sized cup that easily fits in the hand and flares out for a martini-glass-like lip. Otter uses lampworking technique with molten glass to 'paint' a quick swirl of color onto each glass. Start a collection!
Approximately 1 1/2" at base, various heights and top diameters (sizes shown are approximate)