Each package contains:
51 pcs as shown in the images
Float time with helium for latex balloons is between 3-7 hours so it’s recommended that you inflate them on the day and not long before the event.
Air inflated balloons can last days. To keep balloon properly inflated, avoid exposure to extreme temperatures. In cold air, the balloon will deflate slightly; exposure to warm air will restore proper inflation. Excessive heat could cause the balloon to burst.