SINBEE Mermaid Birthday Decorations – 40in Number Balloon Kit with Mermaid Tail & Shell Balloons

Enchanting Under-the-Sea Celebration

Turn a birthday into a seaside fantasy with SINBEE Mermaid Birthday Decorations. This thoughtfully curated set centers on a dramatic 40-inch foil number balloon that catches light with every shimmer, paired with a glittering mermaid tail balloon, two round mermaid balloons, and two sea-shell balloons. A roll of balloon string and a straw are included to help you bring the scene to life with ease. The colors are bright, the prints are clear, and the overall look is designed to feel both magical and attainable for indoor or outdoor setups.

What you get

• 1 piece 40-inch large number balloon
• 1 piece mermaid tail balloon
• 2 pieces 18-inch round mermaid balloons
• 2 pieces 21-inch shell balloons
• 1 roll of balloon string
• 1 piece straw

How to set up

• Find the self-sealing valve and use an air pump or straw to inflate slowly for better control.
• Inflate to about 80% if using a pump, then finish with a straw to prevent overexpansion.
• If two layers of foil stick together, stop inflating, gently separate, then resume to avoid damage.
• When you’re ready to store, deflate slowly, roll up, and keep for future celebrations.

Reusability and care

The kit is designed with durability in mind, and the balloons can be reused with careful handling. When ready to pack away, use the straw to release air, fold flat, and store in a cool, dry place to preserve the finish for another event.

Perfect for many occasions

• Mermaid-themed birthday parties for girls
• Under-the-sea or ocean-themed celebrations
• Baby showers and gender-reveal events
• Party decor for children’s rooms or playful home office setups

Quality and support

The mermaid and shell designs use premium mylar foil for a bright, durable display. For any questions about usage or quality, reach out at your convenience and we’ll be glad to help.