Nargiboy’s incredibly innovative Yoebi stemware holder lets you hold your wine glass, margarita glass, martini glass and other stemware easily yet securely. The Yoebi slides right in to the 3 1/2″ (approx. inside diameter) cup holder already on your boat (or available from SeaSucker). Holds most stemware with bases up to 3 1/8″. Choose between white, black and beige.