50 balloons, assorted colors. Beautiful colorful balloons for a 40th birthday. The print is white with numbers and stars. The balloons are suitable for air and helium filling and are ideal for decorations as well as balloon releases. All our balloons are made from 100% natural rubber and are therefore 100% biodegradable. Size: 30 - 33 cm in diameter. Production: In Europe. Material: Latex balloons. Volume: 15 liters. Helium requirement: 15 liters / 1.5 m³ for 100 pieces. Float time: Up to about 8 - 16 hours / with Hi-Float up to 7 days. Lifting capacity: Maximum 3 grams. Balloon closure with balloon ribbon - Eco: You can find suitable balloon closures in our shop. Please order additionally. Use: Suitable for decoration, release balloons, etc. for air and helium fillings. Balloon release: Suitable with our balloon flight cards. Helium filling max. 1 hour before use. Please use only our ecological balloon closures with ribbon - for the sake of the environment! Delivery: Loose in a bag. Empty, without closure. Storage: Dark, cool 5-18°C, 24 months from delivery date. Tip: Fill a 30 cm round balloon yourself with our disposable helium containers with a capacity of 420 liters. Free tip: Regeneration of latex balloons: 5 minutes in the tumbler. This way, latex balloons can be regenerated and made more elastic again. The balloon filling is best done at room temperature. This minimizes the risk of bursting.