Boat Drinks Wouldn't it be great to enjoy wine & cocktails from a stemmed glass while out on the water without being afraid to set your glass down? Just slide one of these ingenious, lightweight, nautically inspired coasters onto the bottom of your Wine or Cocktail glass for a "no worries" good time. Whether you're sitting at anchor or cruising the coastal waters, you can enjoy your time on the water knowing your drink will just roll with the boat, and not be rolling around in the boat. Each Glass on the Boat™ clips securely onto the bottom of most stemmed glasses, lowering the center of gravity so that your glass will not tip over. The silicon ring around the base of the coaster makes for a non-slip grip on the smooth surfaces of the boat. With just enough grip to keep your glass in place until your next sip. We do recommend the use of polycarbonate drinkware when out on the water. Remove the silicon ring and your Glass on the Boat™ coasters become glass on the sand, grass, patio, table, you name it coasters. If the silicon ring gets dirty, just take it out, give it a rinse, and reinsert it. No worries. The Glass on the Boat™ collection gives you 4 nautically colored coasters inspired by life on the open water, to share with your best Mates. So, stop worrying about your glass toppling over or hitting the deck, forget those little wine charms, and enjoy the good times. Because ... Life's too short to spill wine. The Glass on the Boat™ collection is the perfect gift for the day sailors and cruisers on your gift list who like to boat in style. Coaster Colors: Aqua | Sky | Rose | Clear Bag: Blue