PRICES MAY VARY. - professional weather balloon by hwoyee, designed for meteorological investigations and aerial video. - suggested inflation volume of 2.2-2.8 m³, net lifting force=1120g, total lifting force=1970g, bursting altitude=28000m/92000ft. - natural color close to white, with neck length of 12-15cm and neck diameter of ≤5.5cm, body length=190~220cm. - ideal for fairs, aerial photos, meteorologists, science projects, and grand openings. - requires helium for floating or hydrogen for…