Build eye-catching decorations with our Balloonify Silver Mylar Letter W Balloon. This party balloon shaped like the letter W is pairable with our other Balloonify letter and number balloons to create balloon centerpieces. Built from mylar, this custom balloon is moistureproof to increase its float life. Durable and tolerant to heat, this metallic balloon is reusable. The self-sealing valve of this mylar balloon keeps the air or helium contained inside, maintaining the balloon's shape. You can inflate this graduation balloon to its full capacity using just a hand pump. The aluminum silver finish of this letter balloon makes it perfect for birthday parties. With the built-in hanging loop, fit this birthday balloon on walls or ceilings. Measuring 16 inches in length, this foil balloon can be inflated with air or helium. 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.