40 Inch Pastel Pink BIG SIS Letter Balloons – Pearl Pink Foil Balloon Set with Ribbon for Baby Shower, Gender Reveal, Birthday Party Decorations
40 Inch Pastel Pink BIG SIS Letter Balloons – Pearl Pink Foil Balloon Set with Ribbon for Baby Shower, Gender Reveal, Birthday Party Decorations
This balloon set includes six 40-inch pastel pink foil letters that spell out “BIG SIS,” plus one curling ribbon. Made from durable mylar foil, these large alphabet balloons are designed for baby showers, gender reveal parties, and birthdays. They can be filled with air or helium, and the self-sealing valve makes inflation simple.
What’s Included in the BIG SIS Balloon Set
You receive six individual foil letters: B, I, G, S, I, S. Each letter measures 40 inches and comes in a soft pastel pink with a pearl finish. A matching curling ribbon is also included, perfect for hanging or tying to weights. The set covers the full phrase for a ready-to-display banner.
Balloon Specs at a Glance
| Material | Aluminum foil (mylar) |
| Letter Size | 40 inches each |
| Color | Pastel pink (pearl) |
| Quantity | 6 letters + 1 ribbon |
| Inflation | Air or helium |
| Valve Type | Self-sealing |
| Reusable | Yes |
How to Fill These Foil Letters
Locate the small self-sealing valve at the bottom of each letter. Insert a straw or balloon pump and slowly inflate to about 80–90% full. Overfilling can cause creases or bursting. Once done, press the valve flat to seal — no knot needed. For helium, use a tank; the letters will float when fully filled. The included ribbon can be tied through the pre-cut holes to hang or anchor the balloons.
Can You Reuse These Balloons?
Yes. To deflate, insert a straw into the valve and gently press the balloon until all air escapes. Fold them flat and store in a cool, dry place. The foil material is strong and can be reinflated multiple times. Avoid sharp objects, flames, and lemon juice to prevent damage.
Common Questions
How big are the letters?
Each letter is 40 inches tall, making the full phrase banner about 10 feet wide when spaced out.
Can I use these outdoors?
Yes, but keep them away from wind, sharp edges, and high heat. Helium-filled balloons may float away outdoors if not secured.
Do the letters come assembled?
No, they arrive flat. You inflate them yourself using the self-sealing valve.
Tips for a Great Setup
Inflate to 80–90% for a smooth shape. Use a balloon weight or tape to keep the banner in place. Pair with neutral or pastel decorations for a cohesive look. The pastel pink color works well for baby girl events but can also suit any pink-themed party.