Jack up events like a pro using our Balloonify Silver Mylar Letter M Balloon. Place this M-shaped balloon decoration with our other Balloonify numbers and letters to display various expressions. The mylar build of this custom balloon makes it highly durable and moistureproof, letting you use it in humid conditions too. This foil balloon comes in a brilliant silver finish to level up your special occasion. The self-sealing valve of this party balloon can be easily shut once inflated to not let any air or helium leak. To easily inflate this reusable happy anniversary balloon, you can use a manual or an automatic pump. The hanging loops allow you to hang this giant balloon easily. To reuse these balloons, gently deflate, properly store, and carefully reinflate without overfilling. When inflated, this letter balloon measures up to 40 inches. 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.