This is the perfect companion to our bottle holder and solves the other part of the Wine/Boat/Stability problem (WBS). It holds two wine glasses which seems more sociable than the more common singles holders. 

Sizing? It will fit all but the smallest and largest wine glasses, including most flat bottomed ones. The curved "channel" for the wineglass stem keeps the glass well anchored in the circular "harbour".

Clips onto standard 1" vertical tube.