Can be filled with air or helium. Usually helium stays in 10“ balloon for 6-8 hours. Classic latex balloons come in abundant color vairety, are mainly in pastel shades and non-transparent . Balloons cenventionally measure 11“ and 12“. Standard balloons are the preferred type for printed balloons, but they are naturally decorative without print aswell. We use 100% natural latex balloons, which are environment- friendly.