Summer Theme Balloons. The balloons can be inflated with helium to float. Balloon arrives uninflated. Set a bright and carefree mood with these Summer Theme Balloons, created to complement sunny-day celebrations and outdoor gatherings. Their lively look makes them a great addition to beach parties, poolside events, and seasonal festivities. Designed for flexible use, they can be filled with helium for a floating display and arrive uninflated for convenient storage and transport. Easy to incorporate into arches, clusters, or table décor, they offer a simple way to build a colorful and inviting summer-inspired party setting.