Mcolour Balloon 16 Inch Silver "HAPPY BIRTHDAY" Helium Foil Balloons for Party Supply &hellip; Mylar You will receive 13 pcs balloons in size 16","HAPPY BIRTHDAY"Shaped balloons This balloons is self sealing so no tying with fingers required. Material is aluminum film, color uniform, spherical beautiful This beautiful balloons is great for birthday party! This foil balloon is high quality and suitable to inflate with air!