16" Black 'BOO' Mylar Balloons – Spooky Halloween Party Letter Banner

Add a playful spooky touch to your Halloween décor with these ‘BOO’ Letter Mylar Balloons. Made from premium Mylar, they retain their bold black color and crisp shape, perfect for indoor or outdoor use. The cute “BOO” design brings a fun twist to traditional spooky themes, making it ideal for both kid-friendly and adult Halloween celebrations. Designed for air inflation only, each balloon features a self-sealing valve to keep air contained and built-in tabs for easy hanging—use them as a banner or individually to fit your décor. Perfect for Halloween parties, haunted houses, school events, or any festive setup, these balloons effortlessly enhance your spooky atmosphere.