Building block balloons, delivered
Brick by brick, the party comes together. Our building blocks balloons bring bold primary colors and stackable-brick style to birthdays for little builders and big ones — perfect for brick-building and LEGO® fan parties. Every balloon arrives helium-filled, delivered across Brooklyn — Dumbo, Brooklyn Heights, Fort Greene, Park Slope, Williamsburg, and more — with pickup in Dumbo.
Build a full bouquet with red, blue, yellow, and green latex balloons and an age topper from our number balloons.
Mix and explore
Same-dayAcross Dumbo and most of Brooklyn
2-hour windowsHand-delivered across Brooklyn
PickupIn Dumbo
Building block balloon FAQs
Is this a LEGO-branded balloon?
No. It's a primary-color building-block design that works perfectly for a LEGO-themed party.
How do I build a full building-block bouquet?
Pair the Building Blocks Happy Birthday round ($8) with red, blue, yellow and green latex balloons and a number balloon for the birthday age.
How long do building block balloons float?
Our latex balloons are treated with Hi-Float before inflation and float 1–3 days indoors. Foil balloons float 3–5 days. Keep balloons indoors and away from heat, direct sun and AC vents.
LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize, or endorse these products.