Type:Decorated Balloons Material:Aluminum Film Description: 1. Unit weight: 19 g 2. Size: about 46 × 79 cm 3. Shape: feet 4. Features: can be used repeatedly, without automatic knotting, can be filled with nitrogen, hydrogen (can float) 5. Uses: for weddings, birthday parties, family gatherings and other festive celebrations, for children to play, game rewards and so on 6. Note: balloons are of a rated size, which can easily burst if you exceed them. please control within the maximum diameter marked. sharp objects / dirty ground direct sunlight and excessive squeezing will easily damage the ball skin and burst. generally, it can only float for 6-14 hours after being filled with helium / hydrogen, so helium must be charged on the day of use