Yes, these "candles" bubble cheerfully on your tree, creating a cozy feeling. Christmas bubble lights' concealed bulbs glow in the base, lighting up the bubbling column. Expertly crafted of glass and heat-resistant plastic these beautiful lights add warmth to your holiday décor and create an inviting atmosphere filled with old-world charm. You'll win every tree decorating contest with these fun bubble lights added to your Christmas tree. The vibrant colors enhance every home décor style with a vintage feel of days gone by. They also make a great addition to window displays and other areas of your home where you're looking to add visual interest. Evoke positive memories of past holidays with these nostalgic Christmas lights that glow and bubble with warmth. Make the most of every festive celebration with the many ornaments, light sets, and other Christmas home décor solutions like these eye-catching Christmas lights available at Dream Products all at unbelievably low prices that go easy on your pocketbook. Set of 7 screw-in bubble lights, each 4 1/2"H, spaced 19" apart on cord; 11' overall (9' lighted length). Glass and heat-resistant plastic. UL listed PLEASE NOTE: This item has been built to U.S. electronics specifications and may need additional modifications or converters to be used in countries other than the U.S. and Canada.