Features: The classic black and silver color palette of our birthday party decorations adds a touch of elegance to your celebration. This harmonious color scheme ensures that your happy birthday decoration balloons stand out, making your event memorable. With vibrant, shining colors, our happy birthday decoration balloons let you enjoy the party and create unforgettable memories. The strategic use of black and silver balloons ensures your event is one your guests will reminisce about fondly for years to come. Specifications: Material: Balloon: aluminum foil, latex Candle: plastic Color: black, silver Size: about 10-18 inches/ 25.4-45.72 cm in length Package includes: 1 x Decoration set Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Do not overinflate the balloons to avoid bursting