Create a classy decor with our Balloonify Black Mylar Letter C Balloon. Pairable with other Balloonify numbers and letters, this birthday balloon shaped like the letter C is ideal for creating a unique message arch at your special events. The moistureproof construction of this letter balloon ensures it stays firm during humid conditions. This balloon decoration is durable, allowing you to use them for numerous special occasions. With a self-sealing air inlet, this party balloon seals the air in to provide a perfect shape. Inflate the graduation balloon using a hand pump to minimize fatigue. Conveniently choose from hanging or hovering the balloons, since this reusable custom balloon is suited for air and helium inflation. Adorning a mystic black finish, this helium balloon gives a sleek finishing touch to your party decor. To hang it on the walls, this happy anniversary balloon includes a built-in hanging loops. 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.