200g Weather Balloon

hwoyee professional huge balloon designed for meteorological investigations, aerial videos, holiday party decorations, and entertainment.
– suggested inflation volume of 1-1.2m³ for a 200g balloon, with a net lifting force of 760g and a total lifting force of 1210g.
– natural color close to white, with a neck length of ≥10cm, neck diameter of ≤6.4cm, and body length of 90-104cm.
– ideal for fairs, aerial photos, meteorologists, science projects, and grand openings.
– can be filled with more helium or hydrogen gas for greater lift near the ground, but must be filled with helium for floating. Helium can be purchased locally or filled with hydrogen in a lab (not recommended for ordinary people).