Follow the steps below to build your small number/letter table centerpiece! These tabletop designs are comprised of three tiers of small balloons with a 16″ letter/number on top. They are NOT suitable for high-wind areas. All table centerpieces come pre-inflated and are available for pickup or delivery. Choose your date and time during checkout. Air-Inflated Balloon Lifespan Air-inflated latex  5 to 7 days Air-inflated mylar, foil, and plastic  1 weeks