Astound your guests with stylish decor with our Balloonify Black Mylar Letter B Balloon. Shaped as the letter B, this birthday balloon can be perfectly well with other Balloonify letters and numbers. Constructed from premium mylar, this letter balloon is moistureproof to endure humid and damp conditions. With a durable mylar construction, this party balloon can be reused numerous times. Fashioned with a self-sealing valve, this balloon decoration can easily lock the air in to stay in shape throughout your party. Expand this graduation balloon using a hand pump to speed up the inflating process. This custom balloon is suitable for air or helium inflation. Embellished with a sleek black finish, this helium balloon adds an elegant touch to your banquet decor. The built-in hanging loops of this happy anniversary balloon aids in tying and securing the balloon in place. This black mylar balloon measures 40 inches in length. To reuse this balloon, gently deflate, properly store, and carefully reinflate without overfilling. Shipped deflated in a 1 count box. This party balloon can be easily inflated with the included straw, providing you with full control to help eliminate the risk of over-inflation. Electric air balloon pump (SKU: RWP1061) is available and sold separately.