Celebrate birthdays with flair using our 18" Happy Birthday Balloons from Tuballoons! Crafted from durable Mylar & Foil material by Anagram, these standard-sized balloons are perfect for any birthday theme. Designed for use with helium or air, these balloons come self-sealing for your convenience, ensuring long-lasting celebration. Shop premium Sempertex balloons and get high-quality party decorations delivered directly to your door. Let Tuballoons handle the details so you can enjoy the festivities!