Professional Weather Balloon For Meteorological Investigation Aerial Video Holiday Party Decoration Entertainment Toys Huge Balloons (72 inch/100g)

Professional Weather Balloon For Meteorological Investigation Aerial Video Holiday Party Decoration Entertainment Toys Huge Balloons (72 inch/100g)

Huge balloon,100g,about 6ft/72 inch after inflation，Lift off altitude about 26000m natural color close to white , can be painted the color you want, easy to track or entertainment Ideal for fairs aerial photos,meteorologists, science projects and grand openings. 72‘’ balloon Approximately 100 grams of items can be lifted (not accurate calculation, only approximate value, you need to measure it after you buy the balloon) These balloons must be filled with helium if they want to float up. You need to buy helium locally or fill it with hydrogen in a laboratory to ensure safety (dangerous, not recommended for ordinary people). These balloons must be filled with helium if they want to float up. Need to buy helium locally.or fill it with hydrogen in a laboratory to ensure safety (dangerous, not recommended for ordinary people). Weather observation Weather forecast Meteorological Research Education Project Civil project Aerial observation Ocean observation Army Research Pollution monitoring photography Or Entertainment