Add style to your events using our Balloonify Silver Mylar Letter K Balloon. Manufactured in the shape of the letter "K," this graduation balloon can be used with our other Balloonify numbers and letters. Made from premium mylar, this party balloon is highly durable and moistureproof to increase its float life. With an electrifying silver finish, this reusable balloon decoration complements any background. This custom balloon has a self-sealing valve to avoid air or helium leakage. Conveniently place this birthday balloon anywhere on the wall using the built-in hanging loop. This mylar balloon measures 40 inches when inflated and can be filled using a pump. To reuse these balloons, 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.